Pat chicken dry and pound to even thickness. Season lightly with salt and pepper.
Set up a breading station with flour, beaten eggs, and a bowl combining Parmesan, breadcrumbs, garlic powder, Italian seasoning, salt, and pepper.
Dredge chicken in flour, dip into eggs, then coat well in the Parmesan mixture, pressing gently.
Heat olive oil or butter in a large skillet over medium heat.
Cook chicken for 4–5 minutes per side until golden brown and cooked through (165°F / 74°C).
Transfer to a plate and rest for 5 minutes before serving.