Preheat oven to 425 degrees F. Line 1 or 2 baking sheets with foil or parchment paper.
Place eggplant, onion, potato, bell pepper, and garlic on baking sheet. Add oil, salt, pepper, oregano, parsley, basil, and thyme and toss together well.
Place in oven and roast 40 to 45 minutes, mixing halfway through.
Remove from oven, drizzle with lemon juice, and mix well.