For the lowest carbs, choose a no-sugar-added pizza or tomato sauce with about 3 grams of net carbs or less per 1/4 cup serving and use sugar-free pepperoni. You can swap or omit toppings to match your macros, using lower-carb vegetables like mushrooms and spinach in small amounts. The cloud bread bases can be baked ahead and stored in the refrigerator for up to 3 days or frozen with parchment between layers for up to 1 month, then reheated and assembled with sauce and toppings just before serving.