1. Rinse and pat dry the chicken breasts, then place into the bottom of a slow cooker. Add the corn, tomatoes, chicken broth, enchilada sauce, green chiles, onion, cilantro, bay leaves, garlic, cumin, chili powder, salt, and black pepper.
2. Cook on Low for 6 hours. Transfer the chicken to a large plate, then shred the meat with two forks. Return the chicken to the slow cooker and continue cooking for 30 minutes to 1 hour.