In a large salad bowl, combine the diced cucumbers, tomato wedges, green and red bell peppers, and sliced red onion.
Add the Kalamata olives and crumbled feta cheese to the bowl.
In a separate small bowl, whisk together the extra-virgin olive oil, lemon juice, dried oregano, salt, and black pepper to make the dressing.
Pour the dressing over the salad and gently toss until all the ingredients are evenly coated.
Garnish with freshly chopped parsley.
Serve immediately and enjoy the delicious flavors of Greece!