Prep the base: Add the diced tomatoes with green chiles, black beans, corn, onion, garlic, salsa, tomato paste, and chicken broth to the crockpot.
Stir in the chili powder, cumin, smoked paprika, oregano, salt, and pepper.
Add the chicken: Nestle the chicken breasts into the mixture, making sure they’re mostly submerged. Spoon some sauce over the top.
Cook low and slow: Cover and cook on Low for 5–6 hours or on High for 2.5–3.5 hours, until the chicken is cooked through and easily shreds.
Shred the chicken: Transfer the chicken to a cutting board and shred with two forks. Return the chicken to the crockpot and stir to coat in the sauce.
Brighten it up: Stir in the lime juice.
Taste and adjust salt, pepper, or chili powder as needed. If it’s too thick, add a splash of broth. If it’s too thin, let it simmer uncovered for 10–15 minutes on High.
Serve: Spoon the chicken into warm tortillas, over rice, or onto greens.
Top with cilantro and your favorite extras like avocado, cheese, or a dollop of sour cream.