Pat the chicken breasts dry and lightly season both sides with salt and pepper. If they’re very thick, gently pound to an even thickness (about 1/2 inch). This helps them cook evenly and stay juicy.
Set up a breading station: place flour in a shallow dish, beat eggs in another, and mix breadcrumbs with grated Parmesan in a third. Dredge each chicken cutlet first in flour, then dip in egg, and finally coat with the breadcrumb-Parmesan mixture. Press lightly so the coating adheres.
Heat olive oil in a large skillet over medium heat. Add the chicken and cook until the crust is golden and crisp, about 3-4 minutes per side. It won’t be fully cooked through at this stage; you’re just getting color and flavor.
Preheat your oven to 375°F (190°C). Remove the chicken from the skillet and set aside. In the same pan, add a touch more oil if needed and sauté minced garlic for about 30 seconds until fragrant.
Pour a thin layer of marinara into a baking dish. Place the seared chicken on top. Spoon more sauce over each piece, then sprinkle with shredded mozzarella and a little extra Parmesan if you like. Add a final light drizzle of olive oil.
Bake in the preheated oven for 15-20 minutes, or until the cheese is melted and bubbly and the chicken reaches an internal temperature of 165°F (74°C). If you prefer a crisper top, you can broil for 1-2 minutes at the end, watching closely.
Garnish with fresh basil if you have it, and let the dish rest for a couple of minutes before serving to allow the sauce to set slightly and the flavors to meld.
Serve with your favorite pasta, a green salad, or crusty garlic bread for a complete meal. Leftovers refrigerate well for up to 3 days and can be reheated in the oven to preserve the texture.