In a large mixing bowl, combine the drained chickpeas, crumbled feta, dried cranberries, chopped parsley, and red onion. Gently toss to mix the ingredients evenly.
In a separate small bowl, whisk together the olive oil, lemon juice, Dijon mustard, garlic powder, salt, and pepper until well combined.
Pour the lemon vinaigrette over the chickpea mixture and toss gently to coat all the ingredients with the dressing.
Let the salad sit for at least 15 minutes to allow the flavors to meld. For best results, refrigerate for 30 minutes before serving.
Serve chilled or at room temperature as a side dish or light meal.