Subway salads are quite nice
I would recommend Subway for salad
Also you can try the salad stoey in chanakyapuri
There are a couple of places in Punjabi Bagh and one in khan market
Too miki tapas chanakyapuri has the best veg and non veg salad. They are really healthy and juicy
The Salad Story is good, they are having many branches in south Delhi, If you are a non-vegetarian then you would love their Chicken Teriyaki Salad and I would recommend Tossed Vegetables with Quinoa if you are a vegetarian.
I am not fond of Salads though. But I really like the Salad from subway.
Subway salads are awesome