To ensure that this Healthy Chicken Fajita Casserole is suitable, for those following a gluten-free diet it's important to use ingredients that are certified gluten-free. This means checking labels to verify that the soy sauce, diced tomatoes and any other packaged ingredients are labeled as gluten-free. Additionally you can substitute the rice with certified gluten-free brown rice or another alternative grain like quinoa. By making these adaptations individuals with gluten sensitivities or allergies can fully enjoy this meal without any worries. So go ahead. Indulge, in your gluten-free Healthy Chicken Fajita Casserole!