Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it.
Place flour in a shallow dish. In another dish, whisk together eggs and milk. In a third dish, combine breadcrumbs, Parmesan cheese, garlic powder, oregano, salt, and pepper.
Dredge each chicken breast in flour, shaking off excess. Dip into the egg mixture, then coat thoroughly with the breadcrumb mixture, pressing gently to adhere.
Place coated chicken breasts on the prepared baking sheet. Drizzle or brush lightly with olive oil or melted butter.
Bake for 20–25 minutes, or until chicken is golden brown and internal temperature reaches 165°F (74°C).
Let rest for 5 minutes before serving. Serve with lemon wedges and your favorite side.
Notes
For extra crispiness, spray the tops of the chicken lightly with cooking spray before baking.