01 - Preheat the oven to 425°F. Line two baking sheets with parchment paper and lightly coat with olive oil spray or brush with olive oil.
02 - Wash the eggplants thoroughly and slice 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 for breading: place the flour in the first bowl, whisk the eggs with milk in the second bowl, and combine the breadcrumbs, Parmesan cheese, oregano, garlic powder, salt, and black pepper in the third bowl.
04 - Dredge each eggplant slice in the flour, shaking off excess. Dip into the egg mixture to coat completely, then press firmly into the breadcrumb mixture, ensuring an even coating on both sides.
05 - Place the breaded 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 both sides are golden brown and crispy.
07 - Serve immediately while hot as a side dish, appetizer, or alongside warm marinara sauce for dipping.