Fajita Soup

Name: Fajita Soup
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American, Mexican
Ingredients: 1 Tablespoon olive oil; 1 onion (, chopped); 1 bell pepper (, chopped); 2 cloves garlic (, minced); 14.5 ounce can diced tomatoes with green chilies; 1 chipotle chili in adobo sauce PLUS 1 Tablespoon sauce from the can ((or more, for more heat)); 2 teaspoons ground cumin; 1/2 teaspoon Dried oregano; 1 teaspoon chili powder; 1/2 teaspoon smoked paprika; salt and freshly ground black pepper; 1 pound boneless skinless chicken breasts (, or add leftover cooked chicken (like rotisserie) at the end); 5 cups low-sodium chicken broth; 1 cup frozen corn; 15 ounce can black beans (, drained and rinsed); 1 avocado (, for topping); 1/2 cup fresh cilantro (for topping); tortillas (, optional, for serving)