Preheat oven to 400 degrees F. Line a baking sheet with parchment paper and spray with nonstick cooking spray.
Combine chickpeas, flour, garlic powder, Italian seasoning, onion powder, salt, egg and some pepper in a food processor until smooth. (The mixture will be creamy, like hummus.) Transfer to prepared baking sheet and spread into a 10-inch circle with a rubber spatula.
Bake 15 minutes. Remove from oven and add desired toppings. Return to oven and bake an additional 10 minutes. Slice and serve.