Preheat your oven to 375°F. Slice the corn tortilla into thin strips, place them on a baking sheet, and bake for 8-10 minutes until golden and crisp.
In a medium pot, heat the olive oil over medium heat. Add the diced onion and bell pepper, sautéing for 4-5 minutes until the vegetables are softened.
Stir in the minced garlic, chili powder, cumin, and smoked paprika. Cook for 1 minute until the spices are fragrant.
Add the whole chicken breast, tomato puree, and chicken broth to the pot. Bring the mixture to a gentle boil.
Reduce the heat to low, cover, and simmer for 15-20 minutes, or until the chicken is cooked through and easy to shred.
Remove the chicken from the pot and shred it using two forks. Return the shredded chicken to the soup.
Stir in the black beans and sweet corn, cooking for another 2-3 minutes to heat through. Season with sea salt and black pepper.
Ladle the soup into a bowl and top with the crisp tortilla strips, diced avocado, and fresh cilantro.