In a medium bowl, lightly mash the chickpeas with a fork or potato masher. Leave some whole for texture.
Add the cottage cheese, chopped red onion, chopped celery, and fresh parsley to the bowl with the chickpeas.
In a small bowl, whisk together the lemon juice, Dijon mustard, salt, and pepper.
Pour the dressing over the chickpea mixture and stir gently to combine.
Taste and adjust seasonings as needed.
Serve immediately or chill for at least 30 minutes to allow flavors to meld.
Notes
This salad is great served on lettuce wraps, crackers, or as a sandwich filling. For a creamier texture, you can blend some of the cottage cheese before mixing.