Preheat your oven to 400°F and line a large baking sheet with parchment paper to prevent sticking.
In a medium mixing bowl, combine the ground chicken, egg, parmesan cheese, garlic powder, oregano, sea salt, and black pepper.
Mix the chicken mixture thoroughly with a spatula or clean hands until all ingredients are evenly incorporated.
Transfer the chicken mixture to the prepared baking sheet and press it into a thin, even 8-inch circle about 1/4 inch thick.
Bake the crust for 18-20 minutes until the edges are golden brown and the surface feels firm to the touch.
Remove the crust from the oven and spread the basil pesto evenly across the surface, leaving a small border for the crust.
Layer the baby spinach and sliced cherry tomatoes over the pesto, then sprinkle with the shredded mozzarella cheese.
Place the pizza back into the oven for 5-7 minutes until the cheese is melted and bubbly.
Allow the pizza to cool for 2 minutes before slicing to ensure the crust remains sturdy.