Preheat oven to 400°F (200°C).
Pound the chicken cutlets to even thickness and season with salt and pepper.
Set up a breading station: flour in one bowl, beaten eggs in another, and breadcrumbs mixed with Parmesan in a third.
Dredge chicken in flour, dip in eggs, then coat in breadcrumb-Parmesan mixture.
In a large oven-safe skillet, heat olive oil over medium heat. Fry chicken 3–4 minutes per side until golden.
Remove skillet from heat. Spoon marinara over each piece, then top with mozzarella.
Transfer skillet to oven and bake 15–20 minutes, until cheese is melted and bubbly.
Top with fresh basil before serving, if using. Serve hot.