In a mixing bowl, combine ground chicken, mozzarella cheese, Parmesan cheese, egg, garlic powder, salt, and pepper. Mix until well-combined.
Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper. Spread the chicken mixture in a thin, even circle or rectangle, about 1/4 inch thick.
Place the crust into the preheated oven for about 20 minutes or until the edges begin to brown.
Remove the crust from the oven, cool slightly, then add your favorite pizza sauce and toppings.
Return to the oven and bake for an additional 10-12 minutes or until the cheese is melted and bubbly.
Notes
For best results, store leftovers in an airtight container in the fridge for up to three days and reheat them in the oven before enjoying.