To make this King Henry’s Chicken in a Pot Recipe gluten-free, use certified gluten-free chicken broth and confirm that the white wine, butter, olive oil, herbs, and seasonings are gluten-free. Whole chicken, fresh vegetables, garlic, pearl onions, and potatoes are naturally gluten-free when prepared without gluten-containing additives. Always check labels for broth and packaged ingredients to avoid hidden gluten or cross-contamination.