Preheat the oven to 400°F.
Prick potatoes several times with a fork and use 1 tablespoon of olive oil to rub all four potatoes. Place on a baking sheet and bake for 50-55 minutes until tender.
Remove potatoes from the oven, let cool slightly, then cut in half lengthwise. Scoop out most of the flesh, leaving about 1/4 inch on the skin. Brush the inside and outside of skins with the remaining olive oil.
Sprinkle each potato skin with salt, pepper, smoked paprika, garlic powder, and onion powder.
Place the potato skins skin-side up back on the baking sheet. Bake for 10 minutes, then flip and bake for another 5 minutes or until crisp.
Remove the skins from the oven, fill each with cheddar cheese, Parmesan cheese, and crumbled bacon. Return to the oven and bake for another 5 minutes until the cheese is melted.
Top with green onions and serve with a dollop of sour cream on each skin.