Mauricios Tortilla Soup

Name: Mauricio's Tortilla Soup
Ingredients: 6 boneless, skinless chicken thighs, cut into bite-size pieces; 1 mounded tablespoon Tex-Mex seasoning; Kosher salt and freshly ground black pepper; 2 tablespoons olive oil; 2 tablespoons salted butter; 3 cloves garlic, minced; 2 red bell peppers, diced; 1 medium yellow onion, diced; 3 tablespoons tomato paste; 4 cups low-sodium chicken stock; 4 cups hot water; One 10-ounce can fire-roasted tomatoes and green chiles; One 3.5-ounce can green chiles; 2 chipotles in adobo, minced, plus 2 tablespoons adobo sauce; Two 15-ounce cans black beans, drained; 3 tablespoons masa harina; 1 lime, juiced; 5 small corn tortillas, cut into 2-inch strips; 3 scallions, sliced; 1 cup sour cream; 1 cup pico de gallo (store-bought); 1 cup crumbled queso fresco