Prep the slow cooker: Lightly spray the inside of your slow cooker with cooking spray or brush with a little oil to prevent sticking.
Layer the chicken: Place the chicken breasts (or thighs) in a single layer on the bottom of the slow cooker.
2.5 pounds boneless, skinless chicken breasts (or thighs)
Add seasoning: Sprinkle the taco seasoning, chili powder, cumin, garlic powder, onion powder, salt, and pepper evenly over the chicken.
1 packet taco seasoning, or 2 tablespoons homemade taco seasoning, 1 tsp chili powder, ½ tsp ground cumin, ½ tsp garlic powder, ½ tsp onion powder, ¼ tsp salt, ¼ tsp black pepper
Pour in salsa: Pour the salsa over the chicken, making sure all pieces are coated.
Do not add extra water—there will be enough liquid as the chicken cooks.
1 jar salsa (mild, medium, or hot)
Cook low and slow: Cover and cook on Low for 4 to 6 hours, or on High for 2.5 to 3.5 hours. Do not overcook or the chicken can dry out around the edges.
Shred the chicken: When the chicken is tender and easily pulls apart, remove it to a cutting board and shred with two forks. Return the shredded chicken to the slow cooker and stir to coat with the sauce.
Finish and taste: Stir in lime juice if using, and taste the sauce. Adjust with a pinch of salt, more salsa, or a squeeze of lime as needed.
½ lime (the juice)
Serve: Garnish with chopped cilantro and use the chicken in tacos, bowls, quesadillas, or however you like.
2 tbsp chopped cilantro