Place chicken breasts in the bottom of your slow cooker.
Add black beans, kidney beans, corn, diced tomatoes with green chilies, and diced green chilies.
In a small bowl, mix together taco seasoning, chili powder, cumin, garlic powder, and onion powder. Sprinkle the seasoning mix over the ingredients in the slow cooker.
Pour in the chicken broth.
Cover and cook on low for 6-8 hours or on high for 3-4 hours, until the chicken is cooked through and tender.
Remove the chicken from the slow cooker and shred it with two forks. Return the shredded chicken to the slow cooker.
Stir in the Monterey Jack and cheddar cheeses until melted and combined.
Serve hot, garnished with your favorite toppings.
Notes
For a creamier soup, stir in 1/2 cup of sour cream or cream cheese during the last 30 minutes of cooking.
You can substitute shredded rotisserie chicken for the boneless, skinless chicken breasts for an even quicker meal.
This soup is great for meal planning and can be frozen for later.