In a large bowl, combine the soy sauce, honey, ketchup, Worcestershire sauce, lemon juice, garlic powder, ginger, and cayenne pepper. Add the chicken wings and toss to coat. Cover and refrigerate for at least 1 hour.
Preheat the grill over medium-high heat.
Remove the wings from the marinade and discard the marinade. Place the wings on the grill and cook for 10-15 minutes, turning occasionally, until cooked through.
Meanwhile, make the honey-mustard vinaigrette. In a small bowl, whisk together the olive oil, honey, Dijon mustard, white wine vinegar, garlic powder, salt, and pepper.
To serve, arrange the wings on a platter and drizzle with the honey-mustard vinaigrette.