01 - Prepare three shallow bowls: place flour in the first bowl; whisk eggs and milk in the second bowl; combine breadcrumbs, Parmesan, oregano, garlic powder, salt, and pepper in the third bowl.
02 - Pat chicken breasts dry with paper towels. Dredge each breast in flour, shaking off excess. Dip into egg mixture, allowing excess to drip off, then press firmly into breadcrumb mixture to coat evenly on both sides.
03 - Pour oil into a large skillet and heat over medium-high heat until shimmering but not smoking.
04 - Add chicken cutlets in batches without overcrowding the pan. Fry for 3 to 4 minutes per side until golden brown and crispy. The internal temperature should reach 165°F when a meat thermometer is inserted into the thickest part.
05 - Transfer cooked cutlets to paper towel-lined plates to drain excess oil. Serve immediately with lemon wedges on the side.