Preheat oven to 475°. Cut potatoes in half lengthwise; scoop out pulp, leaving a 1/4-in. shell (save pulp for another use). Place potato skins on a greased baking sheet. , Combine oil with next 5 ingredients; brush over both sides of skins. , Bake until crisp, about 7 minutes on each side. Sprinkle bacon and cheddar cheese inside skins. Bake until cheese is melted, about 2 minutes longer. Top with sour cream and onions. Serve immediately.