This is super easy and all you need to think of is the toppings!
100G of GF plain flour
200G of Aldi High protein yoghurt
Mix the two ingredients together until they form a dough. Roll out and then add your toppings!
The above comes up to
502 kcal
31G protein
90G carbs
1G fat
If you make a tomato base out of passata, top with eat lean cheese and lots of veggies & chicken you can have a high protein cheesy pizza for around 700/800 kcal.