Slow Cooker Fiesta Chicken Soup

Name: Slow Cooker Fiesta Chicken Soup
Prep time: 10 min
Cook time: 6 h
Total time: 6 h 10 min
Ingredients: 1/2 cup onion (diced); 1 garlic clove (minced); 15 ounces black beans (can, rinsed and drained); 15 ounces kidney beans (can, rinsed and drained); 4 1/2 ounces diced green chili peppers (can); 14 1/2 ounces diced tomatoes (can); 2 1/2 cups chicken broth (low-sodium, fat-free (use more broth for a thinner soup)); 1 cup corn (frozen or fresh); 1 lime (juice); 1 tablespoon chili powder; 1 teaspoon cumin; 1/2 teaspoon cayenne pepper (more or less to taste); 1/2 teaspoon black pepper; kosher or sea salt (to taste); 1/2 cup cilantro (freshly chopped); 2 boneless and skinless chicken breasts (cut into 1 to 2 inch cubes (no need to pre-cook))