01 - Place chicken breasts between two sheets of plastic wrap and pound to ½-inch thickness using a meat mallet. Season both sides generously with salt and freshly ground black pepper.
02 - Arrange three shallow dishes: fill the first with all-purpose flour, the second with eggs beaten together with 2 tablespoons of water, and the third with a mixture of grated Romano cheese and breadcrumbs combined thoroughly.
03 - Dredge each seasoned chicken breast in flour, shaking off any excess. Dip into the egg wash, allowing the extra to drip off, then press firmly into the Romano-cheese and breadcrumb mixture, ensuring an even, adherent coating on all sides.
04 - Heat olive oil and 2 tablespoons of unsalted butter in a large skillet over medium heat until the butter foams and begins to subside. Carefully place the breaded cutlets into the pan, working in batches to avoid overcrowding. Cook for 3 to 4 minutes per side until deeply golden and cooked through to an internal temperature of 165°F. Transfer finished cutlets to a warm plate and tent loosely with aluminum foil.
05 - Pour off any excess oil from the skillet, leaving the fond intact. Add the fresh lemon juice and lemon zest to deglaze the pan, scraping up all caramelized bits from the bottom. Stir in the remaining 2 tablespoons of butter and simmer gently for 1 to 2 minutes until the sauce comes together and slightly thickens.
06 - Return the chicken cutlets to the skillet, spooning the lemon-butter sauce generously over each piece. Cook for 1 to 2 minutes to heat through. Garnish with chopped fresh parsley and additional lemon slices. Serve immediately alongside angel hair pasta or a crisp green salad.