Cut the plantain in half lengthwise. Brush on the olive oil, then sprinkle on a little salt and pepper.
Preheat your grill to medium heat, then place the plantain halves on direct heat, skin side down, for about 8 minutes. They will be ready to flip when the bottoms are browned and the fruit starts to lift up from the peel.
Grill with the fruit down for about a minute, then serve. It’s that easy!