Combine beans, onion, chili peppers, corn, tomato sauce, diced tomato, cumin, chili powder and taco seasoning in a slow cooker and mix well.
Nestle the chicken in to completely cover and cook on LOW for 8 to 10 hours or on HIGH for 4 to 6 hours.
Half hour before serving, remove chicken and shred.
Return chicken to slow cooker and stir in.
Top with fresh cilantro and your favorite toppings!
