Preheat your oven to 375°F (190°C) and lightly grease a 9x13 inch baking dish.
Place the eggplant slices on paper towels and sprinkle with salt. Let them sit for 15 minutes to release excess moisture, then pat dry.
In a small bowl, mix olive oil with minced garlic, basil, and oregano.
Layer half of the zucchini slices in the baking dish, followed by half of the eggplant slices.
Brush the vegetables with the herb-infused olive oil and season with pepper.
Spread half of the marinara sauce over the vegetables and sprinkle with 1 cup of mozzarella.
Repeat layers with remaining vegetables, marinara, and cheese. Top with Parmesan.
Cover with foil and bake for 30 minutes.
Remove foil and bake for an additional 15-20 minutes until cheese is golden and vegetables are tender.