Heat 1 tablespoon olive oil in a large skillet over medium high heat.
Add 9 bone-in skin-on chicken thighs to the skillet and brown the chicken on both sides.
Transfer the browned chicken thighs to a crock pot.
Add 1 tablespoon minced garlic, ½ diced white onion, 4 bay leaves, 15 black peppercorns, and ½ teaspoon salt on top of the chicken in the slow cooker.
In a small mixing bowl, whisk together ¾ cup apple cider vinegar and ½ cup soy sauce.
Pour the sauce mixture evenly over the chicken and seasonings in the crock pot.
Cover and cook on low for 6–7 hours or on high for 3–4 hours until the chicken is tender and fully cooked.
Remove the bay leaves before serving.
Spoon the sauce over the chicken, serve warm, and enjoy!
Notes
Refrigerate the leftovers in an airtight container for up to 5 days. Skin-On Chicken thighs work best for this recipe, but you can use drumsticks, bone-in chicken breasts or boneless chicken thighs for this recipe instead if you prefer.