Cook bacon slices in a small skillet over medium heat until crisp. Remove bacon from skillet, and crumble. Add onion to bacon drippings in skillet, and sauté 3 minutes. Add carrots, cider, sugar, and pepper, and bring to a boil. Cook mixture 10 minutes over medium heat or until carrots are tender. Do not drain.
Place carrot mixture in a large serving bowl. Sprinkle with the reserved bacon and chives.