Preheat your oven to 375°F (190°C) and lightly grease a baking dish with cooking spray or oil.

In a skillet, heat olive oil over medium heat and sauté the diced onions for about 5 minutes until translucent.

In a large mixing bowl, combine ground chicken, sautéed onions, minced garlic, breadcrumbs, beaten eggs, soy sauce, salt, pepper, and half of the grated Parmesan cheese. Mix gently.

Transfer the mixture to the prepared baking dish and shape it into a loaf. Sprinkle the remaining Parmesan cheese on top.

Bake in the preheated oven for 45-50 minutes or until the internal temperature reaches 165°F (74°C).

Let the meatloaf rest for 10 minutes before slicing.