California Pizza Kitchen utilises gluten-free cauliflower crusts for five pizzas on their gluten-free menu. Not only do they use only verified gluten-free ingredients, they also prepare their pizzas according to the Gluten Intolerance Group's strict guidelines. If you're not in the mood for pizza, they have a variety of other menu items that are made with gluten-free ingredients, but only the pizzas are made in a gluten-free kitchen space.