IHOP Fajita Omelette

Name: IHOP Fajita Omelette
Ingredients: 1 boneless, skinless chicken breast or 6-ounce flank steak; 1/4 teaspoon chili powder; 1/8 teaspoon salt; 1/8 teaspoon ground cumin; Pinch garlic powder; Pinch ground black pepper; 1/2 teaspoon vegetable oil; 1/2 teaspoon lime juice; 1/2 green bell pepper, diced (about 1/2 cup); 1/4 medium Spanish onion, diced (about 1/2 cup); 1 small tomato, diced (about 1/2 cup); 2 tablespoons butter; 5 large eggs, beaten; salt; pepper; 1 cup shredded Cheddar cheese; 1/3 cup salsa; 2 tablespoons sour cream