Prepare the eggplant by tossing the slices with a tablespoon of kosher salt until evenly coated on both sides. Place a colander in the sink and line the base and walls with the salted slices. Let them sit for 45 minutes to release excess liquid. Don’t skip this process or your eggplant will be soggy!
Once the eggplant has finished draining and the marinara sauce is resting, place a rimmed baking sheet on the middle rack. Preheat the oven & baking sheet to 425 degrees.
Spread the eggplant on a triple layer of paper towels, top with another triple layer of paper towels, cover with a baking sheet, and press firmly to remove as much liquid as possible. Let them sit for a few minutes. Wipe excess salt off each slice. Set aside until ready to dredge.
Prepare the dredging station by pouring the flour onto a plate, then season with sea salt and freshly cracked pepper to taste.
Whisk two eggs in a shallow bowl, then season with sea salt and freshly cracked pepper to taste, until well combined.
Place panko crumbs and parmesan in a shallow bowl, then season with sea salt and freshly cracked pepper to taste, and mix well.
Dredge the dried eggplant slices first in seasoned flour, then in egg, and finally in panko/parmesan crumbs until evenly coated; set aside on a plate. Repeat with the remaining slices.
Bake the eggplant by carefully removing the HOT baking sheet from the oven. Pour 3 tablespoons of oil on the sheet; tip to coat evenly.
Place the panko/parmesan-coated eggplant on the baking sheet.
Place the baking sheet in the oven and bake for 20 minutes. Carefully flip them over with a wide spatula.
Continue baking for 10 minutes, or until they are golden brown.
Remove from the oven. Do NOT turn the oven off.
Spoon a bit of homemade marinara sauce on each eggplant round, then some shredded mozzarella cheese.
Bake for 5-7 minutes, or until the cheese is melted & gooey.
Remove from the oven and sprinkle with freshly chopped parsley.