Preheat oven to 400°F and line a baking sheet with parchment paper.
In a medium bowl, combine the ground chicken, egg, parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper until thoroughly mixed.
Place the chicken mixture onto the prepared baking sheet and press it into a thin, even circle approximately 8 inches in diameter.
Bake the chicken crust for 15 to 18 minutes until the edges are golden brown and the base is firm to the touch.
Remove the crust from the oven and spread the tomato sauce evenly across the surface, leaving a small margin for the crust edge.
Arrange the fresh mozzarella slices over the tomato sauce.
Return the pizza to the oven and bake for an additional 5 to 7 minutes until the cheese is melted and beginning to bubble.
Remove from the oven, top with fresh basil leaves, and let rest for 2 minutes before slicing and serving.