Heat oven to 400 F. Clean potatoes then pierce with fork.
Rub potatoes with olive oil then bake 1 hour until cooked through.
In frying pan over medium heat, cook bacon 10-15 minutes until crisp. Drain on paper towel-lined plate then crumble.
Cut cooked potatoes in half then scoop out insides, leaving about 1/4 inch of potato inside skins. Rub with olive oil then season with salt, to taste. Place on roasting pan and cook 10 minutes. Flip and cook 10 minutes.
Arrange potatoes skin-sides down and season with pepper, to taste. Sprinkle with cheese and crumbled bacon then broil 2 minutes.
Serve with sour cream and sliced green onions, if desired.