Yes student according to source you get the quota for admission in college for the state from which you did your +2.No matter If you studied in delhi till 10th, as you mentioned you did your 12th from Chennai so yes you're eligible for Tamil nadu medical quota.
Its very easy to predict rank in neet just by clicking on below mentioned link.
https://medicine.careers360.com/neet-rank-predictor?icn=NEET_rp&ici=NEET_article_contmap
Feel free to comment if you have any doubt
Good luck