Using a meat mallet (meat tenderizer), pound out the pork slices.
Add the all-purpose flour, salt, and black pepper to a shallow bowl and whisk to combine.
Add two eggs and ¼ cup of milk or water to another bowl and whisk until well combined. This is the egg wash.
Add the panko bread crumbs, garlic powder, onion powder, and black pepper to another bowl and mix until well combined.
Dredge the cutlet in the flour mixture, completely coating the pounded cutlet.
Dip the floured cutlets into the egg mixture to thoroughly coat them.
Add the egg-dipped cutlet to the breadcrumb mixture, making sure to get a coating on both sides.
Repeat the process with each cutlet. Place small sheets of parchment paper or wax paper in between each breaded schnitzel to keep them from sticking together.
Add ½ cup of vegetable oil to a large skillet (or large frying pan), then place it over medium-high heat.
Carefully place breaded cutlets into the hot oil and saute until golden brown and crispy (about 2-3 minutes per side).
Remove the cutlets from the pan and place them on a wire rack or paper towels for one minute to drain the excess oil.
Serve with lemon slices, German potato salad, tossed salad, cucumber salad, spätzle, your favorite grain, or French fries.