Summertime Fried Chicken Dinner

Name: Summertime Fried Chicken Dinner
Ingredients: 1 cup buttermilk; 1 cup dill pickle juice, plus dill pickles, for serving; 1/3 cup Worcestershire sauce; 3 teaspoons paprika; 1/2 teaspoon cayenne; Kosher salt and freshly ground black pepper; One 3- to 4-pound chicken, cut into 10 pieces; 2 cups all-purpose flour; 1/2 cup cornstarch; Vegetable oil, for frying; 2/3 cup mayonnaise; 1/4 cup sour cream; 2 tablespoons apple cider vinegar; 2 tablespoons Worcestershire sauce; 1 tablespoon Dijon mustard; 1/2 teaspoon celery salt; One 14-ounce bag coleslaw mix; Potato rolls, for serving