Slice carrots, cucumber and yellow zucchini into ribbons using a vegetable peeler. Add to a bowl. Add tomatoes and olives.
To make the dressing, add olive oil, red wine vinegar, garlic, lemon juice, Dijon, oregano, onion powder, salt and pepper to a glass jar. Put the lid on and shake well.
Pour the dressing over the veggies and toss to coat.