In a small bowl, whisk together the lemon juice, balsamic vinegar, olive oil, oregano, and salt and pepper, to taste, and set the dressing aside.
Using a vegetable spiral cutter, cut the zucchini into zucchini noodles.
In a large bowl, gently toss together the zucchini noodles, tomatoes, olives, feta and the dressing until combined and evenly coated. Sprinkle with remaining fresh oregano and serve immediately. Enjoy!