Steps
1. In a medium bowl, combine the chopped tomato, sliced cucumber, and red onion.
2. Add the Kalamata olives and crumbled feta cheese to the bowl.
3. In a small bowl, whisk together olive oil, red wine vinegar, dried oregano, salt, and pepper to create the vinaigrette.
4. Pour the vinaigrette over the salad ingredients and gently toss to combine, ensuring everything is evenly coated.
5. Garnish with fresh parsley leaves if desired and serve immediately for the best flavor.