Once the roasted vegetables are transferred to the serving dish, cool to room temp. Cover with foil and chill the dish until ready to reheat (Ideally, make this around 4 hours in advance). When ready to reheat, preheat the oven to 425°. Loosen the foil and bake, very loosely covered for 12 to 15 minutes or until everything is heated through. Just before serving, drizzle with the remaining dressing, and top with the remaining pepitas.