Classic Italian Sub with Roasted Eggplant

Name: Classic Italian Sub with Roasted Eggplant
Ingredients: 1/2 eggplant, thinly sliced into 1/4-inch slices; Homemade Italian Dressing, recipe follows; 4 crusty hoagie rolls, cut in half lengthwise; 8 ounces fresh mozzarella, cut into thin slices; 1 pound genoa salami, thinly sliced; 8 ounces hot capicola, thinly sliced; 8 ounces prosciutto, thinly sliced; 1 pound mortadella, thinly sliced; 1/4 head iceberg lettuce, shredded; 1 medium yellow tomato, cut into 1/4-inch slices; 1/2 teaspoon Dijon mustard; 1 tablespoon sugar; 1/4 cup red wine vinegar; 1/2 teaspoon dried Italian seasoning; 1/4 teaspoon salt; 1/4 teaspoon fresh ground black pepper; 1 clove garlic, minced; 1/4 shallot, chopped; 1/2 cup olive oil