Crisp sourdough piled with creamy dill pickle rotisserie chicken, sharp cheddar, and bubbling mozzarella, then finished with fresh dill and extra pickles.
Thick, sturdy sourdough works best because it can support the creamy chicken filling without becoming soggy. Low-moisture mozzarella provides melt and stretch while sharp cheddar gives the sandwich a stronger flavor. The chicken mixture can be prepared up to one day ahead and refrigerated, but assemble and broil the melts immediately before serving. For less pickle intensity, reduce the chopped pickles to 1/4 cup and omit the extra pickle garnish.