Preheat the oven to 400°F (200°C). Lightly grease a 9x13 inch baking dish.
Slice the eggplants lengthwise into 1/4-inch thick slices. Sprinkle both sides with salt and let stand for 10 minutes, then pat dry.
Brush both sides of the eggplant slices with olive oil and bake for 8 minutes. Flip and bake for 5 more minutes, until tender. Let cool.
In a bowl, combine goat cheese, bacon, 0.5 cup mozzarella, and parmesan cheese. Season with salt and pepper.
Spread 1/2 cup of marinara sauce in the bottom of the baking dish. Place a spoonful of the cheese mixture on each eggplant slice, roll up, and place seam-side down in the dish.
Pour the remaining marinara sauce over the rollups and sprinkle with the remaining mozzarella.
Cover with foil and bake for 30 minutes. Remove foil and bake for another 15 minutes, until bubbly.
Let stand for 10 minutes before serving.
Notes
Serve with a side of crusty bread for dipping in the delicious sauce!