Salt both sides of each eggplant slice and let drain in colander in sink for 20 minutes. Rinse salt off with cold water and dry each slice.
Preheat Oven to 350 degrees
Dip both sides of the eggplant slices first in egg, then in breadcrumbs. Place in a single layer on a lightly oiled (cooking spray works) baking sheet. Bake in preheated oven for 10 minutes on each side.
In a 9×13 baking dish spread 1/2 of the spaghetti sauce evenly to cover the bottom. Place a layer of the baked eggplant slices on the sauce. Sprinkle mozzarella and Parmesan cheeses to fully cover eggplant. Repeat layers with remaining ingredients, ending with the cheese on top. Sprinkle seasonings over cheese as desired
Bake in preheated 350 degree oven for 35 minutes, or until cheese is golden brown.