Add chickpeas to a mixing bowl and mash with a fork or potato masher for texture.
Then add sunflower seeds, mayo, mustard, red onion, celery, dill pickle, salt, and seasonings and mix with a spoon.
Taste and adjust seasonings as needed.
Serve with bread, mustard, lettuce, tomato slices, red onion and avocados if desired.
Or serve on a large green salad, or in a wrap, or on crackers.