In a large pot, add the olive oil and heat over medium heat.
Add the chicken broth, taco seasoning, cumin, salt, and pepper. Stir until well combined.
Stir in the chicken, black beans, pinto beans, corn, diced tomatoes, tomato sauce, and green chilies. Bring to a boil.
Reduce heat to simmer, cover, and cook for 20 minutes. Stir occasionally.
Serve hot, garnished with chopped cilantro if desired.
Notes
This soup is perfect for a cozy night in or a quick and easy dinner option. Feel free to add toppings like sour cream, shredded cheese, or avocado slices for more flavor.