Preheat the oven to 400 degrees F. Brush a large rimmed sheet tray with 1 tablespoon olive oil.
Heat a heavy-bottomed skillet over medium-high heat and cook the bacon until crisp, 5 to 6 minutes. Transfer to a paper towel-lined plate.
Place the potatoes on the prepared sheet try, drizzle with olive oil and season liberally with salt and pepper.
Place the sheet try in the oven and roast until the potatoes are golden brown, 30 to 35 minutes.
In the meantime, in a small mixing bowl, combine the creme fraiche and chives and season with salt and pepper.
Remove the potatoes from the oven and transfer to a serving platter cut-side up. Dollop each roasted potato with the creme fraiche mixture and top with the crisp bacon bits and remaining chives.