Pulse chickpeas and sunflower seeds in a blender or food processor so that they are broken up and mashed a bit, but still chunky and not yet pureed.

Add the chickpea mixture and the rest of ingredients (except lettuce) to a large bowl and mix well.

Pull off the lettuce leaves and scoop the mixture onto the leaves to eat. You can also make a wrap by using a large tortilla and adding some chopped lettuce, or putting it on some bread for a sandwich.