Place the chicken breasts at the bottom of the slow cooker.
Add the black beans, corn, diced tomatoes with green chilies, enchilada sauce, diced onion, minced garlic, ground cumin, chili powder, paprika, and chicken broth on top of the chicken.
Season with salt and pepper to taste.
Cover and cook on low for 6-8 hours or on high for 4 hours, until the chicken is cooked through and tender.
Once cooked, remove the chicken from the slow cooker and shred it using two forks.
Return the shredded chicken to the soup and stir to combine.
Serve hot, topped with shredded cheddar cheese, diced avocado, fresh cilantro, and a dollop of sour cream.
Notes
You can adjust the spices according to your taste. This soup can also be made with leftover rotisserie chicken.