01 - Preheat the oven to 425°F. Lightly grease a large baking sheet with 1 tablespoon olive oil or line it with parchment paper.
02 - Pat chicken breasts dry. If thick, slice horizontally to create cutlets about 1/2 inch thick. Season both sides with salt and freshly ground black pepper.
03 - Arrange three shallow bowls: one with flour; one with beaten eggs combined with water; one with a mixture of panko breadcrumbs, grated Parmesan, dried Italian herbs, and garlic powder.
04 - Dredge each chicken breast first in flour, shaking off excess, then dip into the egg mixture, and finally coat thoroughly with the breadcrumb mixture, pressing gently to adhere.
05 - Place breaded chicken breasts on the prepared baking sheet. Drizzle or brush the tops with the remaining 1 tablespoon olive oil.
06 - Bake for 18 to 20 minutes until the chicken is golden brown and reaches an internal temperature of 165°F.
07 - Remove chicken from the oven. Spoon marinara sauce evenly over each breast, then top with shredded mozzarella and grated Parmesan cheese.
08 - Return the baking sheet to the oven. Bake an additional 8 to 10 minutes until the cheese is melted and bubbly.
09 - Optionally garnish with chopped fresh basil or parsley. Serve immediately while hot.