This is dependent on the university you want to opt for. IGNOU allows the student of the BTech Food Technology to opt for the MSc in Nutrition and Dietetics.

As per the official website, the eligibility is provided below:

B.Sc Home Science with specialization in Food and Nutrition, Dietetics and Clinical Nutrition
Or
PG Diploma in Dietetics and Public Health Nutrition or its equivalent
Or
Graduate (B.Sc. Hons.) or equivalent (MBBS, BHS etc.) from any of the following backgrounds: Home Science/ Food Science and Technology, Zoology, Microbiology, Biochemistry, Pharmaceutical along with the DNHE or CNCC or CFN offered by IGNOU. (Simultaneous admission for CFN/CNCC also permitted).

So for IGNOU you are eligible. Now if you have any other choice then visit there official website or post it on the career360.com (//career360.com) and we will provide you if you are eligible or not.

For the IGNOU official website, visit the link below:

http://www.ignou.ac.in/ignou/aboutignou/school/soce/programmes/detail/175/2

To know more about the Nutrition & Dietetics, visit the link below:

https://www.careers360.com/articles/4880-Career-review-nutrition-and-dietetics

I hope this answer helps. All the very best for your future endeavors!