Preheat the oven to 400°F (204°C) and line a rimmed baking sheet with parchment paper.
In a large mixing bowl, combine the ground chicken, breadcrumbs, beaten egg, Parmesan cheese, minced garlic, parsley, onion powder, salt, and black pepper.
Gently fold the ingredients together by hand until just incorporated; avoid over-mixing to maintain a light texture.
Portion the mixture into 1.5-tablespoon increments and roll into uniform 1-inch spheres.
Arrange the meatballs on the prepared baking sheet, ensuring at least 1 inch of space between each.
Lightly coat the surface of the meatballs with olive oil using a pastry brush or spray.
Bake for 18 to 20 minutes until the exterior is golden brown and the internal temperature reaches an atherosclerotic-safe 165°F (74°C).
Remove from oven and allow to rest for 3 minutes before serving.