Preheat oven to 425˚F.
Moisten hands in a dish of warm water and form stuffing logs the size of two bites. Place a sliced water chestnut on a work surface, top with stuffing and wrap with 1 half-slice of bacon, overlapping to cover surface. Secure with toothpick. Arrange on parchment-lined baking sheet and cook to crisp and well-browned, 20 minutes.