Begin by preparing all the vegetables. Dice the onion, carrots, and celery. Mince the garlic.
Place the boneless chicken breasts in the bottom of the slow cooker.
Add the diced onion, carrots, celery, and minced garlic to the slow cooker, layering them over the chicken.
Pour in the canned diced tomatoes with green chilies, chicken broth, black beans, and corn.
Sprinkle the chili powder, cumin, paprika, salt, and pepper over the mixture.
Stir everything gently to combine, ensuring the chicken is surrounded by the liquids and vegetables.
Cover the slow cooker with the lid and cook on low for 6 hours or until the chicken is cooked through and tender.
Once cooking is complete, carefully remove the chicken breasts. Shred the chicken using two forks and return the shredded chicken to the slow cooker.
Stir in the lime juice for added freshness.
Serve the soup hot in bowls, topped with crushed tortilla chips, fresh cilantro, avocado slices, and shredded cheese.