Preheat oven to 425°F. Line a round 14" pan with parchment paper; set aside.
Place the broccoli florets in a bowl of a food processor. Pulse until the broccoli is grated and looks like rice or couscous, being careful not to over-pulse.
Transfer to a microwave-safe bowl, and cook for 2 minutes, or until softened. Place the steamed broccoli on an open cheese cloth or dish towel and allow it to cool. When it’s cool to the touch, wrap the broccoli in the towel and squeeze out all the excess water so it is as dry as possible.
Transfer the broccoli to a large bowl, add the eggs, 1 cup mozzarella cheese, Parmesan cheese, Italian seasoning, garlic powder, salt and pepper. Mix with a spoon or your hands until all the ingredients are well blended and a dough forms.
Place the dough on the prepared baking sheet, and shape into a round pizza crust, about 1/2 inch thick.
Bake the dough in the preheated oven for 10-12 minutes until golden. Remove from the oven and add the pizza sauce, remaining mozzarella cheese and any other toppings.
Return to the oven and bake until the cheese is melted and the crust is crisp, about 10 more minutes.
Cool for a few minutes before cutting and serving.