BBQ Bacon Burgers with Spicy Slaw

Name: BBQ Bacon Burgers with Spicy Slaw
Ingredients: 1/3 cup apple cider vinegar; 1 tablespoon packed light brown sugar; 1 teaspoon celery salt; 3 tablespoons vegetable oil; 1 14-ounce bag shredded coleslaw mix; 1 Fresno chile pepper, thinly sliced; 4 slices thick-cut bacon; 1 1/2 pounds ground beef; 2 teaspoons barbecue seasoning blend; 4 slices white cheddar cheese (about 4 ounces); 4 slices Texas toast or other thick white bread, toasted; Barbecue sauce, bread-and-butter pickles and sliced white onion, for serving