01 - Preheat oven to 425°F. Line a large baking tray or pizza stone with parchment paper.
02 - Combine ground chicken, egg, Parmesan cheese, garlic powder, Italian seasoning, salt, and black pepper in a bowl. Mix until fully incorporated.
03 - Spread the chicken mixture evenly on the prepared tray, shaping it into a 12-inch round circle about 1/3 inch thick.
04 - Bake the crust for 15 minutes, or until firm and starting to turn golden.
05 - Remove from the oven and carefully blot any surface moisture with paper towels.
06 - Spread pizza sauce evenly over the crust. Top with mozzarella, pepperoni, onion, and bell pepper.
07 - Return to the oven and bake for 8-10 minutes, until cheese is bubbly and golden.
08 - Let pizza rest for 5 minutes before slicing. Garnish with fresh basil and serve hot.