Preheat an oven to 350 degrees. Slice 1-inch thick slices from an eggplant (2 slices per serving), and arrange them on a sheet tray lined with parchment paper. Drizzle the olive oil across the eggplant slices. Sprinkle the salt, pepper, garlic powder, onion powder, oregano, and Italian seasoning over the slices.
Next, spread 1 TB marinara over each slice of eggplant like a pizza. Top each mini pizza off with shredded spinach and ½-slice of mozzarella cheese. Bake the eggplant pizzas for 20 minutes.
While the mini eggplant pizzas are baking, make the side salad. In a bowl, toss together the arugula, separated artichoke hearts, chopped grape tomatoes, and topped mushrooms. Toss the salad with all remaining ingredients until the salad is coated in spices and oils.
Serve 2 mini eggplant pizzas with approximately 95g salad.