Slice each breast horizontally into two thinner cutlets. Place between sheets of parchment or plastic wrap. Pound to 1/4 inch thickness with a meat mallet or rolling pin. Season both sides with salt, pepper, and garlic powder.
Set up the breading station
Fill three shallow bowls. Bowl 1: flour. Bowl 2: whisk 3 eggs with 1 tbsp milk or water. Bowl 3: mix 2 cups breadcrumbs with 1 tsp salt.
Bread the cutlets
Dredge each cutlet in flour and shake off the excess. Dip in the egg mixture, then press firmly into the breadcrumbs on both sides. Place on a wire rack and rest for 10 to 15 minutes before frying.
Fry
Heat 1/2 inch of oil in a large skillet over medium-high heat to 350F. Fry 1 to 2 cutlets at a time for 2 to 3 minutes per side until deep golden brown. Transfer to a wire rack to drain.
Serve
Sprinkle with flaky salt. Serve immediately with lemon wedges and parsley if using.
Video
Notes
Breadcrumbs: Panko gives a shattery, extra-crispy crust. Fine plain breadcrumbs give a more classic, uniform texture. Both work well.Pounding the chicken: Even thickness is the single most important step. It ensures fast, even cooking and prevents the coating from burning before the center is done.Resting before frying: Letting the breaded cutlets rest on a rack for 10 to 15 minutes helps the coating stick. Don't skip this.Oil: canola, avocado, or sunflower work, too. Choose a high-heat frying oil (definitely not extra virgin olive oil!). Aim for 350F and use a thermometer if you have one. Too cool and the schnitzel will be greasy. Too hot and the coating burns before the chicken cooks through. Make ahead: Breaded raw cutlets can be refrigerated for a few hours or frozen in a single layer, then transferred to a freezer bag. Fry from frozen, adding 1 to 2 extra minutes per side.Leftovers: Reheat in a 400F oven or air fryer at 375F to bring back the crispiness. Avoid the microwave; it makes the coating soggy.Kosher salt: If using table salt, use about half the amount called for in the recipe.