Place the cut eggplants onto a paper towel-lined sheet tray and press them gently to fan out their shape. Salt the eggplants well and leave them to weep for about 15 minutes.
In a medium bowl, mix the panko, pepper, garlic powder, dried oregano, onion powder and dried basil.
In a separate medium bowl, whisk together water, flour, egg and egg yolk until smooth. Dip each eggplant into the batter then into the breadcrumb mixture. Fry the eggplants in about 1 1/2 inches of hot vegetable oil for about 3 minutes on each side.
Plate each eggplant on a bed of warm marinara sauce with a few slices of mozzarella and garnish with fresh parsley and basil. Serve immediately.