In the bottom of your crockpot, place the boneless chicken breasts.
Add the diced onion, minced garlic, and bell pepper on top of the chicken.
Pour in the black beans, corn, and diced tomatoes with their juices.
Add the chicken broth and sprinkle in the chili powder, cumin, smoked paprika, salt, and pepper. Stir gently to combine all ingredients.
Cover the crockpot and cook on low for 6-8 hours or on high for 3-4 hours, until the chicken is cooked through and easily shredded with a fork.
About 30 minutes before serving, remove the chicken from the crockpot, shred it using two forks, and return it to the soup. Stir in the lime juice and adjust seasonings if necessary.
Serve hot, garnishing each bowl with tortilla chips, fresh cilantro, avocado slices, and shredded cheese, if desired.
Notes
Adjust seasonings to taste and serve with your favorite toppings.