Zucchini Pizza | Without gluten

This zucchini pizza recipe is perfect for anyone who is on a diet, but wants to eat delicious pizza! It's also perfect for those who want to avoid gluten!
1 large zucchini 600g
salt
1 egg
1 tsp. garlic powder
1/4 tsp. of salt
50 g gluten-free flour or oat flour
80g Charry tomatoes
125g of mozzarella
1 handful of arugula
oregano