To make this Spicy Orange Chicken Thighs recipe gluten-free, ensure that all ingredients used — particularly the chipotle peppers in adobo and any packaged spices — are certified gluten-free. Substitute with gluten-free soy sauce or tamari if additional seasoning is desired. Serve with naturally gluten-free sides such as steamed rice, quinoa, or roasted potatoes to maintain a fully gluten-free meal.