Combine Lentils, Stock, Onion, Tomatoes, Carrot, And Zucchini. Simmer For 20 Minutes. Puree At This Point If Desired. Add Cumin, Pasta, Salt And Pepper. Simmer For 10 Minutes. Saute Onion In Olive Oil Until Well Browned. Add Parsley And Saute For 1 Minute. Stir Into The Soup. Serve With Pita Bread.