Preheat oven to 375°F and line a baking sheet with foil or parchment paper.
In a shallow dish, mix flour, garlic powder, Italian seasoning, salt, and black pepper.
In a second shallow dish, whisk eggs and milk together.
In a third shallow dish, combine panko breadcrumbs and grated Parmesan cheese.
Pat chicken cutlets dry with paper towels.
Dredge each chicken cutlet in the flour mixture, then dip into the egg mixture, and finally coat with the panko-Parmesan mixture.
Arrange coated chicken on the prepared baking sheet.
Lightly spray the tops of the chicken with nonstick cooking spray.
Bake for 35–40 minutes until golden, crispy, and cooked through.
Optional: Broil for 1–2 minutes if additional browning is desired.
Garnish with chopped parsley and serve with lemon wedges.