4 bone-in, skin-on chicken thighs (about 1 1/2 pounds total) Coarse salt and ground pepper  1 1/4 teaspoons cayenne pepper 2 tablespoons mayonnaise 5 tablespoons white-wine vinegar  3 ounces blue cheese, crumbled (3/4 cup) 3 large celery stalks, cut into 1/4-inch pieces 1 head romaine lettuce, cut into 1/2-inch pieces 2 tablespoons unsalted butter Related: 34 Reasons to Eat a Burger Everyday 1. Preheat oven to 475 degrees. Place […]