"tuna" salad – 13 oz jar of chickpeas drained – 1 1/2 tablespoons fresh lemon juice more to taste – 2 tablespoons mayonnaise more to taste – 1 teaspoon Dijon mustard more to taste – 1 small celery stalk very finely chopped – sea salt to taste – freshly ground pepper to taste for serving – 4 slices sourdough bread – handful of lettuce leave – cherry tomatoes about 4-6 per sandwich, heirloom tomatoes are perfect too