Tortillas
Corn kernels are ground to make traditional corn tortillas. Cornmeal or corn flour, on the other hand, are common substitutes. They should not contain gluten by definition, but some recipes and packaged products add wheat flour to change the consistency. Check the labels to ensure that any tortillas you buy at the supermarket are truly gluten-free.
Many classic corn tortilla recipes use a simpler method than hand-grinding kernels, and corn flour is frequently substituted. Rather than baking the dough, first, heat a skillet and cook the crusts on the stovetop. After adding the toppings, bake the pizza to cook the remaining ingredients. Keep in mind that most tortillas will produce a texture more akin to a cracker than a doughy pizza, which is sometimes exactly what you want.