01 - Place the drained chickpeas in a large mixing bowl and mash with a fork or potato masher until mostly broken down, leaving some chunks for texture.
02 - Add the celery, red onion, dill pickles, red bell pepper if using, and parsley to the mashed chickpeas.
03 - In a separate small bowl, whisk together vegan mayonnaise, Dijon mustard, lemon juice, capers if using, garlic powder, salt, and black pepper until smooth.
04 - Pour the dressing over the chickpea and vegetable mixture. Stir thoroughly until all ingredients are evenly coated.
05 - Taste and adjust salt, pepper, or lemon juice to preference.
06 - Serve immediately as a sandwich filling, in wraps, with crackers, or atop a salad. For enhanced flavor, refrigerate for 30 minutes before serving.