01 - Preheat the oven to 400°F. Line two baking sheets with parchment paper and lightly oil or spray them.
02 - Arrange eggplant slices on a rack or paper towels, sprinkle both sides with salt, and let sit for 20 minutes to draw out moisture and bitterness. Pat dry thoroughly.
03 - In a shallow bowl, whisk eggs and milk. In another bowl, combine panko breadcrumbs, Parmesan, oregano, basil, garlic powder, salt, and black pepper.
04 - Dip each eggplant slice into the egg mixture, then coat with the breadcrumb mixture, pressing to adhere. Place coated slices on prepared baking sheets.
05 - Lightly spray or drizzle eggplant slices with olive oil. Bake for 20 minutes, flip slices, then bake another 10 to 15 minutes until golden and crisp.
06 - Reduce oven temperature to 375°F. Spread 1/2 cup marinara sauce evenly in a 9x13-inch baking dish. Layer half the baked eggplant, half the remaining marinara, and half the mozzarella. Repeat layers, finishing with sauce, mozzarella, and Parmesan cheese.
07 - Bake uncovered for 20 to 25 minutes until cheese is melted and bubbling. Let rest for 5 minutes, garnish with fresh basil if desired, and serve.