Daily meals, How about a 600 calorie pizza?

I have a group on facebook where we all share our recipes and meals with photos to give other people ideas of what else they can cook for a change.
Since setting up the group which is open to carnivores, veggies and vegans, I have discovered so many more interesting and low calorie meals.
One of the favourite things I have done is make a pizza with only just over 600 calories. It is a good size and was very filling.
Tesco Free From Pizza Base - 253cal
Bacon dry fried, all fat removed and crushed between kitchen roll 25g - 70cal
Tomato Puree 15g - 20cal
Sweet Corn 20g - 15cal
Low fat Mozzerella - 20g - 55cal
Mushrooms 40g - 5cal
Light Chedder 30g - 95cal
Double gloucester 20g - 82cal
Spinach Handfull - 2cal
Red Pepper 20g - 10cal
Mixed italian herbs

607 Calories. Remove the Bacon for a Veggie Pizza and its 537

Please let me know any great low calorie recipes you have tried, or try the pizza and let me know what you think of it :)