My favorite place for lunch is Le Pain Quotidien in West Hollywood or Beverly Hills.
This is a belgian chain that specializes in organic breads and cakes. I love the classical music in the background; fresh, delicious and most importantly organic food (
tartines, omelettes and salads are my favorite); laid back atmosphere and reasonable prices for the quality of food. The place will make you feel like you are somewhere in the belgian countryside. You can also choose to sit outside and just enjoy another sunny day in LA ;)