01 - Preheat oven to 400°F. Rub potatoes with olive oil and sprinkle with salt. Prick each potato several times with a fork. Place directly on oven rack and bake for 50-60 minutes until skins are crisp and a knife slides easily into the center. Let cool slightly.
02 - In a large bowl, combine shredded chicken, sour cream, milk, cheddar cheese, bacon (if using), green onions, butter, garlic powder, smoked paprika, black pepper, and salt. Mix thoroughly until well incorporated.
03 - When potatoes are cool enough to handle, cut each in half lengthwise. Using a spoon, carefully scoop out most of the flesh, leaving a 1/4-inch shell. Add scooped potato flesh to the chicken filling mixture. Mash and mix until well combined and creamy. Adjust seasoning if needed.
04 - Spoon the filling back into the potato shells, mounding slightly. Top each with additional shredded cheddar cheese. Return stuffed potatoes to a baking sheet and bake at 400°F for 15-20 minutes until cheese is melted and golden.
05 - Remove from oven, sprinkle with chopped parsley, and serve hot.