In a medium bowl, combine the tomatoes, cucumber, and green onion. Add the extra-virgin oil olive, 2 tablespoons red wine vinegar, sugar, oregano, 1/2 teaspoon kosher salt (or 1/4 teaspoon table salt), and ground black pepper. Toss gently to combine.
Cover and refrigerate until ready to serve.
Serve over your favorite bed of lettuce or in the Chicken Shawarma Rice Bowls recipe above.
I recommend making the salad at least several hours before serving so the flavors and ingredients have time to mingle. (I usually make the salad right after starting the chicken in the slow cooker in the recipe above.)