Split the banana in half lengthwise and place cut side up in a bowl to create a boat. Reserve 1 tablespoon of the yogurt, and place the remainder in a straight line down the center of the banana boat.
Combine the reserved 1 tablespoon of yogurt with cocoa powder and honey. Using a fork, mix well until no lumps of cocoa powder remain. Add strawberries, pineapple, and peanuts and drizzle over yogurt and fruit-filled banana boat.