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 and cut them into 1/2-inch thick rounds. Optionally, sprinkle the slices lightly with salt and let them rest for 15 minutes to draw out excess moisture, then pat dry with paper towels.
03 - Arrange three shallow bowls: fill the first with flour, whisk the eggs and milk together in the second, and combine the breadcrumbs, Parmesan cheese, 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 breadcrumb mixture, coating both sides evenly.
05 - Place the breaded slices in a single layer on the prepared baking sheets. Drizzle or spray the tops lightly with olive oil.
06 - Bake for 15 minutes, then carefully flip each slice. Continue baking for another 15 minutes until the coating is golden brown and crispy.
07 - Serve immediately while hot and crispy, accompanied by marinara sauce for dipping if desired. Excellent as a side dish, appetizer, or sandwich component.