Preheat oven to 425F. Scrub potatoes clean and arrange in a single layer on a large sheet pan. Prick potatoes all over with a fork. Roast potatoes at 425F 40-50 minutes until potatoes are tender when pierced with a fork. Keep oven on
Allow potatoes to cool several minutes. Once cool enough to handle, cut potatoes in half vertically. Carefully scoop out potato interior, leaving about 1-inch of potato shell at the bottom (save the potato interior for another use).
Grease the sheet pan you used to roast the potatoes. Brush potato shells with 1 tablespoon melted butter and arrange cut-side down on sheet pan. Bake potatoes at 425F 15-20 minutes until cut side is crispy.
Meanwhile, melt remaining 1 tablespoon butter in a small skillet over medium heat. Add jalapeno and sauté 2-3 minutes until slightly softened. Add garlic and cook 1 additional minute until fragrant.
Combine sauteed jalapeno mixture with cream cheese and cheddar in a medium bowl. Fold until mixture is just combined and season with salt and pepper to taste.
Remove potatoes from oven and flip to opposite side. Fill potatoes with cream cheese filling. Return potatoes to oven and continue baking 8-12 minutes until filling is melted and lightly browned.
Remove potato skins from oven and top with crispy bacon and green onions. Serve warm and enjoy!