Flatten the chicken breasts to an even thickness, about 1/2 inch.
Season the chicken with salt and pepper on both sides.
Set up a breading station with flour, beaten eggs, and breadcrumbs mixed with Parmesan.
Dredge each chicken breast in flour, then dip in eggs, and finally coat with breadcrumbs.
Heat olive oil in a skillet over medium heat until shimmering.
Add the breaded chicken to the skillet and cook until golden brown, about 4-5 minutes per side.
Transfer the chicken to a paper towel-lined plate to drain excess oil.
Garnish with fresh parsley and serve immediately.