01 - Preheat the oven to 425°F. Line two baking sheets with parchment paper and lightly coat with olive oil spray.
02 - Wash the eggplants thoroughly and slice into 1/2-inch thick rounds. Optionally sprinkle slices lightly with salt and let rest for 15 minutes to draw out excess moisture, then pat dry with paper towels.
03 - Arrange three shallow bowls: place flour in the first, whisk together eggs and milk in the second, and combine breadcrumbs, Parmesan cheese, dried oregano, garlic powder, salt, and black pepper in the third.
04 - Dredge each eggplant slice in flour, shaking off excess. Dip into the egg mixture, then press firmly into the seasoned breadcrumb mixture, coating both sides evenly.
05 - Place coated slices in a single layer on the prepared baking sheets. Lightly drizzle or spray the tops with olive oil.
06 - Bake for 15 minutes, then carefully flip each slice and continue baking for another 15 minutes until golden brown and crispy on both sides.
07 - Serve immediately while hot as a side dish, appetizer, or alongside warm marinara sauce for dipping.