Prep the slow cooker: Lightly spray the insert with oil to prevent sticking and make cleanup easier.
Add the base: Pour in the chicken broth, then add diced tomatoes with their juices, black beans, corn, onion, and bell pepper.
Stir in chili powder, cumin, smoked paprika, garlic, oregano, salt, and pepper.
Nestle the chicken: Place the chicken breasts into the mixture, spooning some liquid over the top. This helps the spices coat the chicken.
Cook low and slow: Cover and cook on Low for 4 to 5 hours or on High for 2.5 to 3.5 hours, until the chicken is tender and easily shreds.
Shred the chicken: Remove the chicken to a plate and shred with two forks. Return it to the slow cooker and stir to coat in the sauce.
Brighten it up: Stir in the lime juice.
Taste and adjust salt, pepper, or spices as needed. If you want it saucier, add a splash more broth.
Assemble the bowls: Add a scoop of cooked rice to each bowl, then spoon the chicken and bean mixture over the top. Pile on your favorite toppings.
Serve: Finish with an extra squeeze of lime and a sprinkle of cilantro.
Add hot sauce if you like heat.