Hi Isha. Your selection of subject is very good but only few institutes offer B.Sc degree in Nutrition and Dietetics. Top 10 Colleges in Delhi are enlisted below, please do check

1. Lady Irwin College

2. University of Delhi ( Institute Of Home Economics)

3.Lovely Professional University

5.Manav Rachna International Institute Of Research and Studies.

6.Amity University- Gurugram

7.SGT University - Gurugram

8.Sharda University, School.of Allied Health Sciences- Greater Noida.

9. G.D Goenka University- Gurugram

10. PDM University - Bahudurgarh , This university also offers M.sc, Phil and Ph.D in Nutrition and Dietetics

You can also apply for Indra Gandhi National Open University ( IGNOU). It's is equally good and valuable. IGNOU offers many courses related to Health, Nutrition,  Dietetics and food .

Hope it helps.

Good Luck.