Most restaurants in Los Angeles have delivery and take out service.
Many vegetarian or vegan restaurants offer the same service to its customers. Vegan House in Silver Lake is one of the best vegetarian restaurants in Los Angeles that is outstanding in its delivery service. It's fast and the staffs are friendly and professional.
http://www.veganhouseonsunset.com/
Other favorite vegetarian restaurants in Los Angeles with delivery service are Vegan Joint, Vegan Glory, Bulan Thai Vegetarian Kitchen, HealthyCA, Truly: A Vegan Restaurant, Tierra Cafe, Real Food Daily, My Vegan, Green Truck and many more. You may check on their websites for special delivery offers and their locations.
http://www.greentruckonthego.com/
http://www.healthyca.us/