How about using a low carb tortilla?? Well, depending on whether or not you can fit them into your diet.
But, if you can bake the tortilla till crisp -- it may puff up if so, just poke it with a knife. Once crisp top with whatever & bake till warm.
A good way to get your "pizza" as it's one serving, no leftover to tempt & really pretty healthy (depending on toppings)