Layer the base: Add sliced onion and minced garlic to the bottom of the slow cooker.
This creates a flavorful bed and keeps the chicken juicy.
Season the chicken: Place the chicken on top. Sprinkle with cumin, chili powder, oregano, salt, and pepper.
Add the sauce: Pour the salsa verde over the chicken. If you like heat, scatter in the jalapeño slices.
Cook low and slow: Cover and cook on Low for 4–6 hours or High for 2.5–3.5 hours, until the chicken is tender and easy to shred.
Breasts tend to cook a bit faster than thighs.
Shred and finish: Transfer chicken to a board and shred with two forks. Stir the lime juice and cilantro into the sauce. Return the chicken to the slow cooker and toss to coat.
Taste and adjust salt as needed.
Serve: Spoon into warm tortillas, over rice, or onto a salad. Add your favorite toppings and enjoy.