Season the chicken breasts on both sides with the salt, pepper, garlic powder, onion powder, and smoked paprika. Place the chicken in the crock pot.
In a medium bowl, whisk together the honey, Dijon mustard, whole grain mustard, apple cider vinegar, olive oil, and minced garlic until combined.
Pour the honey mustard sauce over the chicken, making sure the chicken is evenly coated.
Cover and cook on Low for 4–6 hours or High for 2–3 hours, until the chicken is cooked through and reaches an internal temperature of 165°F.
Remove the chicken from the crock pot and shred it with two forks.
Return the shredded chicken to the crock pot and stir until well coated with the honey mustard sauce.
Serve warm and enjoy.
Notes
I like using a combination of Dijon and whole grain mustard because the whole grain mustard adds texture and extra flavor. If you don't have whole grain mustard, you can use additional Dijon mustard instead.Store leftovers in an airtight container in the refrigerator for up to 5 days.