Heat one tablespoon of vegetable oil in a stockpot over medium heat. Add chicken breasts and sear until cooked through, about 5 minutes per side. Once chicken breasts are cooked, place on a plate and set aside to cool.
Add onion to stockpot and saute until translucent, about 3-5 minutes. Add garlic and saute for another 30 seconds or until garlic is fragrant.
Add chicken broth, petite diced tomatoes, black beans, corn, ground black pepper, and cayenne pepper. Bring to a boil, and then simmer for 15-20 minutes.
Brush tortilla with remaining vegetable oil before cutting into strips. Place in a single layer on your prepared baking sheet and bake for 10-15 minutes or until golden brown.
Shred chicken and return to stockpot along with lime juice and fresh cilantro. Remove from heat, ladle into individual bowls, and garnish with tortilla strips and cheddar cheese.
Notes
Remember: draining and rinsing your canned goods helps reduce the sodium content! You can buy low-sodium varieties as well, if you wish.
You can buy tortilla strips ready-to-go if you'd prefer instead of doing it yourself.
Store leftovers in an airtight container in the refrigerator for up to 3-5 days.