Season chicken with salt and pepper.
Dredge in flour, dip in beaten eggs, then coat in a mixture of panko and Parmesan.
Fry in ¼ inch of oil over medium-high heat until golden and cooked through, about 3–4 minutes per side.
Spread a thin layer of marinara in an oven-safe pan.
Top with mozzarella and Parmesan, bake at 500°F until melted, then broil for 1–2 minutes.
Slide the melted cheese and sauce over the crispy chicken before serving.
