Start the coals or heat a gas grill for medium direct cooking. Make sure the grates are clean.
Trim away the ends of the plantains, then cut them in half lengthwise, leaving the peel intact. Whisk the oil, honey, and hot sauce together in a small bowl. Brush the cut sides of the plantains with the mixture.
Put the plantains on the grill directly over the fire, peel side down. Close the lid and cook until the peel starts to pull away from the plantain, 5 to 8 minutes. Carefully turn the plantains over and cook until the glazed side browns, 1 to 2 minutes. Transfer to a plate, remove the peels, drizzle over the remaining glaze, and serve.