Chicken Fajita Soup with Black Beans & Rice

boneless chicken breasts

olive oil

salt and pepper

large yellow onion, diced

green bell pepper, diced

red bell pepper, diced

chopped garlic

chili powder

ground cumin

smoked or sweet paprika

ground cayenne pepper, optional

low-sodium chicken broth

black beans, rinsed well in a colander

+ ½ cups corn

white Minute rice (or 1 cup cooked rice)

shredded sharp cheddar cheese, plus more for serving

sour cream, for serving

tortilla chips, for serving