Place chickpeas in large bowl and add chopped red onion, celery, onion powder, garlic powder, sea salt, relish and nutritional yeast flakes; mix well.

Add minced seaweed to mixture.  Stir in the mayonnaise; mix well.  Spread tuna mixture equally onto 4 slices of sprouted wheat bread. Top with green leafy lettuce and sliced tomatoes.  Serves 4