We make pizza almost every week and controlling the fat content is simple. Limit the cheese. But don't eliminate it entirely.
Crust should be simple to make - use the same recipe you would use for french bread.
water, flour, yeast and salt. There is NO added fat.
Sauce - use a simple canned tomato sauce (the plain kind) and season with dried herbs. No fat.
Cheese - choose great lowfat cheese - just don't use very much.
Toppings - forget the meat. Use mushrooms, onions, artichoke hearts, red peppers, basil leaves, etc. Lots of flavor and NO FAT.
Cook on pizza pan using corn meal instead of oil to lube pan - no fat.