Preheat the oven to 180°C (350°F).
Lightly grease a muffin tin with oil or cooking spray.
In a large mixing bowl, combine the ground chicken, egg, Parmesan cheese, and mozzarella cheese.
Mix until fully combined.
Add garlic powder, oregano, salt, and black pepper.
Stir until the seasonings are evenly distributed and the mixture resembles a soft dough.
Using a cookie scoop or spoon, divide the mixture evenly among the muffin cups.
Gently press the mixture down to create small pizza bite bases.
Bake for 12 minutes or until firm and cooked through.
Remove from the oven.
If excess moisture is present, blot gently with a paper towel.
Top each bite with a small amount of marinara sauce.
Sprinkle mozzarella cheese over the top.
Return to the oven or place under a medium broiler for about 5 minutes until the cheese is melted and lightly golden.
Garnish with fresh basil before serving.
Enjoy your delicious Mini Keto Chicken Crust Pizza Bites warm.