Drain and rinse the chickpeas thoroughly.
Chop the cucumber, feta cheese, red onion, and basil.
In a medium mixing bowl, combine chickpeas, cucumber, feta, red onion, and basil.
In a small bowl or jar, whisk together olive oil, white balsamic vinegar, lemon juice, garlic, dried parsley, Dijon mustard, salt, and pepper.
Pour the dressing over the salad and toss gently until everything is well coated.
Chill for 15–20 minutes before serving for best flavor.