El Rancho Chicken

3 cups cooked cubed chicken
1 can cream of mushroom soup
1 can cream of chicken soup
1 (10 ounce) can Ro-Tel diced tomatoes with green chiles
1 medium green bell pepper, chopped
1 medium onion, chopped
1 1/2 teaspoons chili powder
1/4 teaspoon ground black pepper
8 ounces shredded cheese
12 (6- or 7-inch) corn tortllas

Place chicken in crockpot; cover with remaining ingredients except cheese and tortillas. Cover and cook on LOW for 6 to 8 hours.

Serve with warm tortillas and cheese.