Prep Vegetables: Combine the tomato wedges, cucumber slices, red onion, and green pepper in a wide, shallow salad bowl.
Add Olives: Scatter the Kalamata olives over the top.
Season: Drizzle the olive oil and red wine vinegar over the vegetables. Sprinkle with a pinch of sea salt.
Toss: Gently toss the vegetables so they are evenly coated.
The Feta: Place the slab of feta cheese directly on top of the salad.
Garnish: Drizzle a tiny bit more oil over the feta and sprinkle the dried oregano over the entire dish.
Serve: Serve immediately with crusty bread for dipping in the juices.