Garlic Parmesan Chicken Meatloaf

1 ½ lbs ground chicken

¾ cup seasoned breadcrumbs

½ cup grated Parmesan cheese

2 large eggs

4 cloves garlic, minced

½ yellow onion, finely chopped

¼ cup milk

2 tbsp fresh parsley, chopped

1 tsp Italian seasoning

1 tsp salt

½ tsp black pepper

¼ cup shredded mozzarella cheese (optional, for topping)

1 tbsp olive oil (for brushing)