Piadine with Grilled Chicken and Spinach Salad

Name: Piadine with Grilled Chicken and Spinach Salad
Ingredients: Olive oil; 4 (8-ounce) boneless chicken breasts; 1 1/2 tablespoons extra-virgin olive oil; 2 pounds store-bought pizza dough, rolled out into rounds; All-purpose flour, for dusting work surface; Coarse cornmeal, for sprinkling on baking sheets; 1 tablespoon garlic rub; 8 cups loosely packed baby spinach leaves; 1 1/2 cups diced fresh mozzarella cheese; 1 1/2 cups fresh tomato wedges; 1/4 cup red onion, slivered; 1/3 cup freshly grated Parmesan; About 1/2 cup Whole Citrus Vinaigrette or your favorite vinaigrette; Gray salt and freshly ground black pepper