Chicken Tortilla Soup

2 chicken breasts
1 Tbsp. olive oil
1 1/2 tsp. cumin
1 tsp. chili powder
1/2 tsp. garlic powder
1/2 tsp. salt
1 c. diced onion
1/4 c. green bell pepper
1/4 c. red bell pepper
3 cloves garlic, minced
1 can (10 oz) Rotel Tomatoes & green chilies
32 oz. chicken stock
3 Tbsp. tomato paste
2 c. hot water
2 cans black beans
3 Tbsp. cornmeal
5 corn tortillas cut into strips

*cook in crock pot on low 6-8 hours.
*garnish: sour cream, avacado, cheese, cilantro