The Best Rotisserie Chicken Sandwich

Name: The Best Rotisserie Chicken Sandwich
Ingredients: 1 (12-ounce) jar marinated roasted red peppers, drained; ⅔ cup unsalted roasted almonds or cashews; ¼ cup panko breadcrumbs; 2 tablespoons extra-virgin olive oil; 1 tablespoon fresh lemon juice; 1 ½ teaspoons balsamic vinegar; 1 teaspoon honey; 1 teaspoon salt; ½ teaspoon ground cumin; ½ teaspoon ground coriander; ¼ teaspoon crushed red pepper; ¼ cup mayonnaise; 12 ounces shredded rotisserie chicken (about 3 cups); 1 cup loosely packed Little Gem lettuce leaves; 8 slices whole-grain bread, toasted if desired