Preheat the oven to 425F. Arrange the carrots in one layer on a baking sheet, and toss with the oil.
Sprinkle the carrots with the salt, sugar, and pepper. Scatter the bacon pieces over the carrots.
Roast the carrots and bacon for 15 minutes, then remove from the oven and shake the pan to toss. Roast for 10 minutes more until the bacon is cooked and the carrots are tender.
Sprinkle the carrots with the scallion and basil leaves. Serve!