Prep the base: Add broth, black beans, corn, diced tomatoes with chiles, salsa, onion, and garlic to the slow cooker.
Stir to combine.
Season the chicken: In a small bowl, mix chili powder, cumin, smoked paprika, oregano, salt, and pepper. Rub this spice mix over the chicken.
Layer and cook: Nestle the seasoned chicken into the mixture in the slow cooker. Cover and cook on Low for 5–6 hours or High for 2.5–3.5 hours, until the chicken is very tender and easily shreds.
Shred and finish: Transfer the chicken to a cutting board and shred with two forks.
Return it to the slow cooker, stir in the lime juice, and taste. Add more salt or lime as needed.
Build your bowls: Spoon rice or quinoa into bowls. Top with the chicken mixture and your favorite toppings—think avocado, cilantro, cheese, and a squeeze of lime.
Optional thickening: If the mixture seems too soupy, leave the lid off and cook on High for 15–20 minutes to reduce slightly, or stir in a handful of shredded cheese to bind.