As per the information available online, there are no BSc Forensic Science colleges in Chennai. I am providing the name of the colleges in Tamil Nadu which offers the course of  BSc Forensic Science course-

RCAS Coimbatore - Rathinam College of Arts and Science

VPMM Arts and Science College for Women, Virudhunagar

Theni College of Arts and Science, Theni

Dhanalakshmi Srinivasan College of Arts and Science for Women, Perambalur

Sree Saraswathi Thyagaraja College, Pollachi

Sir Issac Newton Arts and Science College, Nagapattinam

AJK College of Arts and Science, Coimbatore

Mary Matha College of Arts and Science, Theni

Srinivasan College of Arts and Science, Perambalur

Sri Sai Bharath College of Arts and Science, Dindigul

For more BSc Forensic Science colleges in India consider the link below:

https://university.careers360.com/colleges/list-of-bsc-degree-colleges-in-india?branch=Forensic%20Science

I hope this helps. Wish you a great eve!