01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - Pierce each potato several times with a fork. Place directly on the oven rack and bake for 40 to 45 minutes, until skins are crisp and potatoes are tender when pierced.
03 - While potatoes bake, cook bacon in a skillet over medium heat until crisp. Drain on paper towels and crumble once cooled.
04 - Remove baked potatoes and allow to cool slightly. Cut each potato in half lengthwise and carefully scoop out most of the flesh, leaving approximately ¼ inch attached to the skin.
05 - Brush both sides of each potato skin with olive oil, then season with salt and black pepper. Arrange skins skin-side down on the prepared baking sheet.
06 - Return skins to the oven and bake for 10 minutes, flipping once halfway through, until edges are golden and crisp.
07 - Fill each potato skin with shredded cheddar cheese and crumbled bacon. Bake for an additional 3 to 4 minutes until cheese is melted and bubbly.
08 - Remove from oven, top with sliced green onions and a dollop of sour cream if desired. Serve immediately.