Heat olive oil in a large pot over medium heat
Add onion and cook until soft, about 4 minutes
Add red and green bell peppers and cook 3–4 minutes
Add garlic and cook 30 seconds until fragrant
Stir in cumin, chili powder, smoked paprika, oregano, and cayenne
Add chicken, chicken broth, diced tomatoes, and tomato sauce
Bring to a gentle boil, then reduce heat and simmer 25–30 minutes
Remove chicken, shred it, and return it to the pot
Add black beans and corn and simmer uncovered for 10 minutes
Season with salt, black pepper, and lime juice
Fry tortilla strips in hot oil 1–2 minutes until crispy or bake at 375°F for 8–10 minutes
Serve soup hot topped with tortilla strips