Preheat the oven to 200°C (400°F) and brush a large baking dish with olive oil

Pound the chicken breasts to an even thickness to ensure uniform cooking

In a shallow bowl, combine breadcrumbs, grated Parmesan, garlic powder, onion powder, oregano, basil, paprika, salt, and black pepper

In a separate bowl, whisk together eggs and milk until fully combined

Dip each chicken breast into the egg mixture, allowing excess to drip off

Press the chicken firmly into the Parmesan breadcrumb mixture, coating all sides evenly

Place the coated chicken into the prepared baking dish, leaving space between pieces

Bake uncovered for 22–25 minutes, flipping once halfway through for even crisping

Remove the dish from the oven and spoon marinara sauce evenly over each chicken breast

Sprinkle mozzarella and extra Parmesan cheese on top

Return the dish to the oven and bake for an additional 8–10 minutes, until the cheese is melted and bubbly

Remove from the oven and allow the chicken to rest for 5 minutes before serving