1. 1. Chop the tomatoes, cucumbers, and bell peppers into bite-sized pieces.

2. 2. Thinly slice the red onion and olives.

3. 3. Crumble the feta cheese.

4. 4. In a large bowl, combine the chopped vegetables, olives, and feta cheese.

5. 5. Drizzle olive oil and sprinkle oregano over the salad.

6. 6. Toss gently to combine all the ingredients.

7. 7. Serve and enjoy!