Sprinkle a generous amount of sea salt on both sides of eggplant filets. Set aside for an hour. This allows the eggplant to lose some of its bitterness. After an hour, rinse filets and pat dry. Make Tabbouleh.
Place cooked quinoa in a large bowl. Add cucumber, tomatoes, onions, parsley, and balsamic vinegar. Mix thoroughly. Set aside.
Brush both sides of eggplant filets with olive oil, garlic powder, sea salt and pepper. Grill each side until eggplant is golden brown (about 4 minutes per side).
Transfer to a serving plate. Top each filet with prepared Tabbouleh and optional Vegan parm. Drizzle top with balsamic glaze.