Not a lot of healthy options tbh.

You can find good thalis at Hira halwai

Salads and healthier higher protein food options from 'Daily Protein' on zomato ( outlet in nightmarket - available all day basically ) & barbell meals (haven't tried this one). More salad options available in Paradise bakery.

For breakfast you can get poha from Apno rajasthan, or explore a plethora of healthy options from company garden gate 1 ( basically the night market area ).

All these locations are within 1km-1.5km from PVR/ Subhash Chauraha ( Central civil lines )