To make this Savory Tennessee Onion Pizza gluten-free. Simply substitute the pizza dough. With a gluten-free variety. Readily available at most grocery stores. Ensure the dough. Is at room temperature. For easy rolling. Check that all other ingredients. Especially the spices and cheese. Are gluten-free as well. With this simple swap. You can enjoy all the rich, cheesy flavors of this recipe. Without compromising on taste or texture!