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If you are looking for a simple and delicious meal idea, try this Crock Pot Chicken Fajita Soup. It’s packed with flavor, low carb, gluten free and sure to impress the entire family.

A bowl of chicken fajita soup topped with sour cream and cheddar cheese.
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Easy Chicken Fajita Soup Recipe:

I was in the mood for chicken fajitas last week, but we didn’t have any tortillas in the house so I had to compromise. Me… being my frugal self decided to create a new recipe. Basically I took my Crockpot Chicken Fajita recipe and turned it into a soup.

This soup turned out so good! I love the fact that it wasn’t very heavy so my family can eat it even during the spring or summer. But it is the perfect comfort food on those cold winter nights! This soup is a delicious Crockpot Keto Recipe.

A black bowl of chicken fajita soup topped with sour cream and cheddar cheese with 2 black spoons next to it.

Keto Friendly Chicken Soup:

If you are following a Keto Diet this is the perfect soup for you! This soup has all the Mexican flavors without all the carbs!

This soup is full of flavor that is high in protein and low in carbs. I love the fact that you don’t have to feel guilty eating this delicious soup.

My entire family loves this soup! Which is great because on days when I don’t want to eat low carbs, I know that I can serve this meal and everyone will enjoy it! It sure makes dinner time easier!

If you are following a Keto diet, make sure you check out all of our Keto recipes!

A bowl of chicken fajita soup topped with sour cream and cheddar cheese with a red and white towel next to it.

You will need a crock pot for this recipe.

If you are in the market for a new crockpot, this one is my favorite. I use this all the time and it’s great. My favorite feature is that you can lock the lid down.

This is awesome for when you need to take the crockpot somewhere. I often use the slow cooker to take dishes to potluck events and this feature is amazing! There are several others on sale here.

Another favorite is this programmable crock pot  for when I am am not at home all day. I love coming home to a nice meal ready and waiting!

I also like to use crock pot liners to make clean up a breeze. These are worth every penny and save a ton of time. This is especially helpful during busy weeks of school and activities. I’m all about crock pot liners.

If you are not using a crock pot liner, I recommend spraying the crock pot insert with a non stick cooking spray or rubbing it with olive oil for an easier clean up after you make this delicious soup recipe.

Ingredients to make crock pot chicken fajita soup


  • Chicken breasts (mine were frozen) or chicken thighs
  • Diced Tomatoes, 14.5 oz
  • Chicken Broth (See Chicken broth substitutes)
  • Taco Seasoning (I used homemade taco seasoning)
  • Minced Garlic
  • Onion, chopped
  • Green bell pepper chopped
  • Red bell pepper chopped
The raw ingredients in a crock pot

How to make Crock Pot Chicken Fajita Soup:

Combine all the ingredients in the crockpot.

Cook on high for 3 hours or low for 6-8 hours. (We prefer to cook on low for 6-8 hours)

Shred or chop the chicken. Stir the chicken back into the crock pot to combine the flavors.

Serve with tortillas or tortilla chips.

Chicken fajita soup cooked in a crock pot and topped with fresh chopped cilantro

If you like a little extra heat, add a few dashes of red pepper flakes or chili powder to this slow cooker soup.

Topping Ideas:

If you are sticking with the low carb, try topping with extra cheese and sour cream. We love to add onion to the top of the soup also. I make sure to get some extra chicken in my bowl as well!

Tortilla chips are a great addition to this soup too (if you’re not following a low carb or keto diet)! I add them to my soup when I am not eating low carb. It is so good and gives it that extra crunch! So yummy!

Also, if you are not following a low carb diet, you can easily add in some corn, black beans and pinto beans to the soup! It just adds a little extra flavor to the soup.

Once the soup is ready, add in some fresh cilantro and you are set with a delicious soup recipe!

Tips for making this Soup Recipe:

I use a small food chopper or processor to quickly and easily chop onions and green peppers. If you do not have one of these, I highly recommend them. They are such a time saver.

I usually just chop the entire vegetable and freeze what I don’t need. It’s so nice to be able to just take diced onion or bell peppers out of the freezer for my favorite recipes.

Learn how to freeze peppers and  how to freeze onions and you will save so much time in the kitchen!

Don’t have a crock pot but have an Instant Pot? We have Instant Pot Chicken Fajita Soup that is just as good and you can have dinner on the table in about 30 minutes!

Chicken fajita soup cooked in a crock pot and topped with fresh chopped cilantro with a wooden spoon in it

Print this Crock Pot Chicken Fajita Soup recipe below:

Crock Pot Chicken Fajita Soup

4.94 from 217 votes
Crock Pot Chicken Fajita Soup is easy to make and tasty. The entire family will enjoy this Low Carb Crock Pot Chicken Fajita Soup recipe. It’s also budget friendly.
Prep Time 10 minutes
Cook Time 6 hours
Total Time 6 hours 10 minutes
Servings 8
Cuisine Mexican
Course Soup
Calories 164


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  • Combine all the ingredients in a 6 quart crock pot.
  • Cover and cook on low for 6-8 hours or on high for 3-4 hours.
  • Remove the chicken, shred and return it back to the crock pot.
  • Stir to combine the flavors. Serve with your favorite toppings. I topped mine with sour cream, shredded cheddar cheese and chopped cilantro.

Recipe Video

Recipe Notes

Refrigerate the leftovers in an air tight container for up to 5-7 days.  

Nutrition Facts

Calories 164kcal, Carbohydrates 7g, Protein 26g, Fat 3g, Saturated Fat 1g, Trans Fat 1g, Cholesterol 73mg, Sodium 545mg, Potassium 735mg, Fiber 2g, Sugar 4g, Vitamin A 735IU, Vitamin C 47mg, Calcium 47mg, Iron 2mg

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How to freeze Crock Pot Chicken Fajita Soup:

You can place everything in a freezer bag and freeze. When you are ready to cook the soup just take it out of the freezer and put it in the crock pot to cook on low.

Another option is to freeze the soup after it is cooked. I like to spoon it into silicone cupcake pans and then freeze them. This is perfect for size for individual size lunches.

More Low Carb Recipes. 

Close up of a black bowl of chicken fajita soup topped with sour cream and shredded cheddar cheese

More Easy Crock Pot Recipes:

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About the Author

Hi, I’m Carrie. Welcome to Eating on a Dime!

I’m on a mission to help you cook delicious meals without busting your budget. Together we are going to cook real food… for real families!

4.94 from 217 votes (189 ratings without comment)

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Recipe Rating


  1. Joy Mitchell says:

    5 stars
    I don’t remember if I added the beef broth two boxes.

  2. Joy Mitchell says:

    5 stars
    I made this but couldn’t leave well enough alone I tailored it to my family. I used hamburger meat, 1 can rotel, pinto beans I had already cooked, a half block of velveeta, 1 block 8 Oz. Cream cheese,1 package taco seasoning , two tablespoons chili powder, onion powder, garlic powder, 1 tsp. Fresh garlic, one small red onion, one red pepper, one green pepper, black pepper to taste I like a lot, one pouch of cream velveeta. Hot sauce three shakes, franks red hot brand. Red pepper flakes one shake. This was delicious. I tried it my grandson loved it, hubby loved it. For toppers I used cilantro flakes, sour cream, crispy jalapeños, you get them in the salad dressing aisle of the store. Tortilla strips also on salad dressing aisle. Cheddar cheese.

  3. Melissa says:

    5 stars
    Oh my gosh, this soup is so flavorful and it’s super easy to make. My fussy husband even had a bowl! Thank you for sharing this recipe.

  4. Debra says:

    5 stars
    Omg. I just made this for my hubby and I. Very tasty and easy to make! We used the taco seasoning packet instead of making our own. Very good!!

  5. Carrie Barnard says:

    You can put them in frozen.

  6. Michelle says:

    I purchased frozen peppers and onions. Should I thaw these the night before I plan to cook this or is it OK to throw them in frozen? Thanks!

  7. Brenda says:

    5 stars
    ABSOLUTELY DELICIOUS! I followed the recipe exactly how it reads. Easy to prepare. Will definitely make again!

  8. Maria Zerafa says:

    Made the soup but added some brown rice to make it thicker. My partner is a fussy eater where soups are concerned but he licked it and came for seconds. Thank you it was a real hit. Cooked it on the stove instead of in the slow cooker.

  9. Nicole Soule says:

    5 stars

  10. Annie Asmus says:

    I just made this soup. It tastes just as good as the meal. I would definitely make this again

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