I was never a big pizza eater, but we often ordered it as it was convenient when I worked late, so my husband and kids did have a taste for it. When we moved to the sticks (seriously we are in the sticks), there were no pizza places at all. If we want to have even half-way decent pizza, we have to drive about 30 miles. Since even one slice messes with my BS severely, I improvised. Here is what I do when the kids are jonesing for a pizza. (I know I saw this on a low-carb site, but not sure where.)
For the crust, I buy the leanest ground beef I can find, nothing less than 93/7. I add about 1/4 cup grated fresh parmesan cheese and whatever spices we want (oregano, a little cayenne to give it some heat, etc.). Mix well and then spread out as thinly as possible on a pan (I actually use my grilling pan with the slots so that the grease just falls through into the lower section. Cook this until it is done. It will shrink some. After it is completely done, I transfer it to another pan and slather it with some low-carb spaghetti sauce, then add whatever toppings my kids want. They love spinach, so usually spinach, bellpepper, onion, mushroom, banana peppers, then top that with shredded low-fat mozarella cheese and a little more fresh parmesan. Sometimes, they just have to have pepperoni, so I just leave a corner without pepperoni for me as there is already a whole lot of meat with the crust. I serve that with a salad and whole grain rolls. My kids love pizza night!