Tantalizing Barbecued Chicken Nuggets

Ingredients

• 1 pound boneless, skinless chicken breasts, cut into bite-size pieces
• 1 teaspoon black pepper
• 1 teaspoon apple cider vinegar
• 1/4 teaspoon cayenne pepper
• 2 cups buttermilk
• 1/2 cup dill pickle juice
• 2 teaspoons kosher salt
• 1/4 teaspoon paprika
• 1/4 teaspoon celery salt
• 2 teaspoons Dijon mustard
• 1 tablespoon honey
• 1 teaspoon yellow mustard
• 1/3 cup mayonnaise
• 1/4 teaspoon garlic powder