Preheat the oven to 400 degrees F. In a large nonstick ovenproof skillet, melt the coconut oil over high heat. Sprinkle the pears generously with sugar and place, cut-side down, in the skillet; cook until caramelized, about 10 minutes. Turn the pears over and pour in the apple cider; roast in the oven until tender, about 25 minutes. Transfer the pears to a platter. Place the skillet with the pan juices on the stovetop and cook over high heat until reduced to a syrup, about 5 minutes. To serve, drizzle the syrup over the pears and top with the candied ginger.