01 - Preheat oven to 400°F. Rub potatoes thoroughly with olive oil and sprinkle with kosher salt. Prick each potato several times with a fork to allow steam to escape during baking.
02 - Place potatoes directly on oven rack and bake for 50-60 minutes until skins are crisp and a knife slides easily into the center. Remove from oven and let cool until manageable to handle.
03 - While potatoes bake, combine shredded chicken, sour cream, whole milk, cheddar cheese, crumbled bacon, green onions, unsalted butter, garlic powder, smoked paprika, black pepper, and salt in a large bowl. Mix thoroughly until well incorporated.
04 - Cut cooled potatoes in half lengthwise. Using a spoon, carefully scoop out most of the flesh, leaving approximately 1/4-inch thick shells intact. Reserve scooped potato flesh for filling.
05 - Add scooped potato flesh to chicken filling mixture. Mash with potato masher or fork until smooth and thoroughly combined. Taste and adjust seasoning if necessary.
06 - Spoon filling mixture back into potato shells, mounding slightly above the edges. Top each stuffed half with additional shredded cheddar cheese.
07 - Place stuffed potatoes on baking sheet and return to 400°F oven for 15-20 minutes until cheese is melted and golden brown.
08 - Remove from oven, sprinkle with chopped fresh parsley, and serve immediately while hot.