Preheat the oven to 400°F. Spread bacon strips on a rimmed baking sheet and bake for 16-18 minutes until crispy. Remove and set aside to drain.

Remove most of the bacon grease from the sheet pan, leaving about 2-3 tablespoons. Toss the chopped potatoes in the bacon grease, season with salt and pepper, and spread in a single layer. Bake for 20 minutes, then stir and bake another 20 minutes. Stir once more and bake an additional 15 minutes until golden.

Chop cooked bacon into small pieces. Remove potatoes from oven, sprinkle with shredded cheese and bacon. Return to oven for 2-3 minutes until cheese melts. Garnish with sliced green onions and serve hot.