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 chicken mixture evenly on prepared tray, forming a 12-inch round circle approximately 1/3 inch thick.
04 - Bake crust for 15 minutes until firm and beginning to turn golden.
05 - Remove from oven and carefully blot any surface moisture with paper towels.
06 - Spread pizza sauce evenly over crust. Top with mozzarella, pepperoni, onion, and bell pepper.
07 - Return to oven and bake 8-10 minutes until cheese is bubbly and golden.
08 - Let pizza rest 5 minutes before slicing. Garnish with fresh basil. Serve hot.