Skillet Chicken Fajitas

Name: Skillet Chicken Fajitas
Ingredients: 4 ounces Orange Juice; 4 ounces Pineapple Juice; 2 Tablespoons Lime Juice; 1/3 cup oil; 1/4 cup soy sauce; 2 Tablespoons Worcestershire; 1 Tablespoon Minced Garlic; 2 Tablespoons Homemade Fajita Seasoning; 1.5 pounds boneless, skinless chicken breast ((or chicken thighs)); 1 tablespoon oil; 4 ounces onion, sliced; 4 ounces mushrooms, sliced; 6 ounces bell pepper, sliced ((red and green bell peppers)); 2 tablespoons butter; 2 tablespoons water; 1 tablespoon tomato paste; 4 flour tortillas ((optional)); 2 limes, quartered; 1 avocado, thinly sliced ((or prepared Guacamole)); 1/4 cup cotija cheese, crumbled; 2 tablespoons chopped cilantro; 1/4 cup pico de gallo ((optional))