Stuff you'll need:
Joseph's Pita Bread: http://www.josephsbakery.com/SubPages/StaticPages/ProductDetails.aspx?ID=a882465d-659f-4dd7-9850-c8daf449f7d4 60 Calories for one Pita
We get it at Walmart (unfortunately), but hopefully you can find it at your local grocery store.
HEB Brand Pasta Sauce: There are several varieties. I love the Roasted Red Pepper flavor (http://www.livestrong.com/thedailyplate/nutrition-calories/food/heb/spicy-red-pepper-pasta-sauce/) but you can use the Marinara or whichever of the other flavors sounds best to you. All of them are tasty, and really low calories. 35 calories for half a cup of sauce. You'll need less than half a cup, probably closer to a quarter cup.
HEB Brand Fat Free Shredded Mozzarella: http://www.fatsecret.com/calories-nutrition/heb/fat-free-fancy-shredded-mozzarella-cheese 45 calories for a quarter cup.
This stuff is a game changer in the dieting/cheese world. It and the shredded cheddar cheese both actually taste like and act like the regular stuff. It toasts and melts without tasting and looking like it's made of high grade plastic.
And then on to toppings. This is where you can get as crazily creative as you want. We just used Boar's Head Turkey pepperoni http://www.fatsecret.com/calories-nutrition/boars-head/turkey-pepperoni
An ounce of pepperoni is going to more than cover your pizza, so you'll end up using less than the 70 calories worth of pepperoni unless you REALLY REALLY REALLY love pepperoni.
Once you've got all your ingredients, preheat the oven to 400 degrees, grab an oven safe tray, and assemble your pitza(s) on said tray. We have a ventilated tray made specifically for pizza/pitza cooking, which worked out great since the heat from the bottom really helped crisp up the pita crust. I'd imagine some tinfoil on a regular tray will work fine as well. though. Toss them in the oven and let them cook for 12-13 minutes. Take your pitza(s) out of the oven, let them cool for a few minutes (to avoid the invitable searing off of tongue/roof of mouth skin), then dig in.
Enjoy!
So Totals:
Joseph's Pita Bread "Crust": 60 Calories
HEB Brand Sauce: (using 1/4 a cup, 35 calories per half cup) 18 calories
HEB Brand Fat Free Mozzarella: 45 calories for your 1/4 cup
Boar's Head Turkey Pepperoni: 70 calories for an ounce (you're using less than this, we'll call it 60 just for math's sake)
60+18+45+60 = 183 calories (this is on the high side, but just for upward rounding's sake) for a tasty pitza.
