01 - Lightly grease the interior of a 6-quart slow cooker with cooking spray or oil
02 - Arrange chicken breasts at the bottom of the cooker and coat evenly with cumin, chili powder, garlic powder, salt, and black pepper
03 - Spread diced onion, red bell pepper, frozen corn, and black beans over the seasoned chicken
04 - Pour 1 cup of enchilada sauce evenly across the vegetable mixture
05 - Arrange half the tortilla quarters over the sauce and top with 1 cup of shredded cheese
06 - Add remaining enchilada sauce, remaining tortilla pieces, and finish with remaining cheese
07 - Cover and cook on low heat for 4 hours until chicken is fully cooked and tender
08 - Twenty minutes before serving, shred chicken directly in the cooker using two forks, mix thoroughly, and keep covered to blend flavors
09 - Dish hot portions and top with fresh cilantro, green onions, and sour cream as desired