Preheat your grill or grill pan over medium-high heat.
Rub the chicken breasts with 1 tablespoon olive oil, smoked paprika, cumin, chili powder, salt, and pepper.
Grill for 6-8 minutes per side, or until cooked through (internal temperature of 165°F). Remove from the grill and let the chicken rest. Once done, dice or cube the grilled chicken and set aside.
Prepare the Soup Base
Heat the remaining olive oil in a large soup pot over medium heat.
Add the onion and cook until softened, about 5 minutes.
Stir in the garlic, jalapeño (if using), and dried oregano, and cook for 1-2 minutes until fragrant.
Pour in the chicken broth and fire-roasted tomatoes. Bring to a simmer.
Add Veggies and Chicken
Stir in the corn and black beans. Simmer for 10 minutes.
Add the diced grilled chicken to the pot. Simmer for another 5 minutes.
Finish and Serve
Stir in the fresh lime juice. Taste and adjust seasoning if needed.
Ladle the soup into bowls and top with tortilla strips, avocado, cheese, cilantro, and sour cream. Serve with lime wedges on the side.