Preheat oven to 400°; peel, then slice 2 potatoes into ¼-inch rounds; toss with 2 tbsp oil, salt/pep + toss to combine; bake 10 min, flip then bake until browned + tender, about 10 min; sprinkle each round with 1 tbsp cheese then return to oven for 2-3 min until melty

Meanwhile, heat skillet over medium; add 3 slices bacon + cook, flipping frequently, until browned + cooked through, 4-6 min; let cool slightly + crumble into bite-size pieces

Sprinkle rounds with bacon then dollop each with 1 tsp sour cream; garnish with chopped chives