Steps
1. In a bowl, combine chopped tomatoes, sliced cucumber, Kalamata olives, and red onion.
2. Crumble the feta cheese over the vegetables.
3. In a small bowl, whisk together olive oil, dried oregano, salt, and black pepper.
4. Drizzle the dressing over the salad and gently toss to combine.
5. Serve immediately or chill for 10 minutes to enhance flavors.