In a small mixing bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, dried oregano, salt, and black pepper until emulsified.
In a large salad bowl, combine the drained chickpeas, diced cucumber, halved cherry tomatoes, diced red onion, and sliced Kalamata olives.
Pour the vinaigrette over the salad ingredients and toss thoroughly to ensure even coating.
Gently fold in the crumbled feta cheese and chopped parsley to avoid breaking the cheese apart excessively.
Serve immediately at room temperature or refrigerate for 30 minutes to allow the flavors to develop.