Prep oven & pans — Preheat oven to 425°F (220°C). If using convection, set to 400°F (204°C) with fan. Place wire rack(s) on rimmed baking sheet(s) and lightly oil the racks or line the sheet with parchment beneath the rack for easy cleanup.
Slice eggplant — Trim stems and cut eggplants into ½-inch (1.2 cm) rounds (or lengthwise planks if you prefer). Aim for even thickness so they cook uniformly.
Optional salting — Arrange slices single-layer on a tray, sprinkle both sides lightly with salt and let sit 20–30 minutes to draw out excess moisture. Pat slices dry thoroughly with paper towels. (Skip this step if short on time or if using young eggplants.)
Set up breading station — Bowl 1: flour (season with a pinch of salt & pepper). Bowl 2: eggs beaten with 1 tbsp water (or plant milk for vegan binder). Bowl 3: panko + Parmesan + garlic powder + onion powder + oregano + paprika + pepper + parsley — mix well.
Dredge & coat — Work in batches: dredge each slice in flour (shake off excess), dip in egg, press into breadcrumb mixture until well coated. Place coated slices in a single layer on the wire rack. For extra-crunch, double-dip (flour → egg → crumbs → egg → crumbs).
Oil lightly — Lightly spray or brush the tops of the coated slices with oil. A fine mister gives the most even coverage.
Bake — Bake 18–25 minutes, flipping once halfway (about 9–12 minutes per side), until deep golden and crisp. Thicker slices may require up to 30 minutes. For an extra finish, broil 1–3 minutes at the end—watch closely to avoid burning.
Rest & finish — Remove from oven and let rest 2–3 minutes to firm up. Squeeze lemon, sprinkle herbs, and serve immediately with desired dip or incorporate into your dish.