Slice each bacon strip lengthwise into two thinner strips. Cut each strip into three equal pieces to create multiple wrapping sections.
In a medium bowl, whisk together the soy sauce and honey.
Add the water chestnuts and toss until evenly coated.
Let the water chestnuts marinate for about 30 minutes, stirring occasionally.
Preheat the oven to 400°F (200°C).
Place a wire rack inside a rimmed baking sheet and lightly coat the rack with nonstick cooking spray.
Remove the water chestnuts from the marinade, reserving the liquid for later.
Wrap each water chestnut with two pieces of bacon, positioning them to cover most of the chestnut.
Secure the bacon with a toothpick and place on the prepared rack.
Continue until all water chestnuts are wrapped.
Brush the wrapped appetizers lightly with some of the reserved marinade.
Bake for 20 minutes.
Remove the baking sheet from the oven and brush the appetizers again with additional marinade.
Return to the oven and continue baking for 10 to 15 minutes, or until the bacon is crisp and golden.
While the appetizers bake, prepare the dip by combining the Greek yogurt, Dijon mustard, hot sauce, cayenne pepper, and parsley in a small bowl.
Season the dip with salt and black pepper to taste.
Cover and refrigerate until ready to serve.
Transfer the hot bacon-wrapped water chestnuts to a serving platter and serve alongside the spicy mustard dip.