In a large bowl, combine potatoes, oil, salt, pepper and chili powder. Toss until evenly coated. Spread on a sheet tray lined with parchment paper or foil. Bake 25-30 minutes or until tender.
Meanwhile, mix creamy ranch dip and heavy cream together until combined.
Transfer wedges to a serving platter. Drizzle dipping sauce over wedges. Sprinkle with green onions and crumbled bacon.