01 - Pound the chicken breasts to an even 1/2-inch thickness using a meat mallet. Season both sides with salt and freshly ground black pepper.
02 - Set up three shallow bowls: place flour in the first, beat eggs with milk in the second, and combine Romano cheese, panko breadcrumbs, and lemon zest in the third.
03 - Dredge each chicken breast in flour, shake off excess, dip into egg mixture, then coat thoroughly with the panko-Romano mixture, pressing firmly to adhere.
04 - Heat olive oil and unsalted butter in a large skillet over medium heat. When hot, add breaded chicken breasts (cook in batches if necessary). Fry for 4 to 5 minutes per side until golden brown with an internal temperature of 165°F. Transfer cooked chicken to a paper towel-lined plate.
05 - Wipe out the skillet, pour in lemon juice, and allow to bubble for 30 seconds. Drizzle the sauce over the cooked chicken breasts.
06 - Sprinkle with freshly chopped parsley and extra Romano cheese. Serve immediately with lemon wedges.