There’s a new cereal plaintiff in town.

A Bronx man who says he suffers from diabetes has filed lawsuits against three Brooklyn venues — the Barclays Center, Ford Amphitheater and Music Hall of Williamsburg — saying their policies prohibiting outside food on their premises violate the federal Americans with Disabilities Act.

Jose Reyes says he would need to bring his own snacks into the places in order to keep his insulin levels stable, although he notes in the suits that he doesn’t even “attempt” to attend events at them because of his “metabolic disability.”

The Brooklyn federal-court filings add that it would be dangerous for Reyes to eat any of the food for sale there and he needs to pack his own pre-measured eats.

His suits ask that each location “stop enforcing its draconian anti-food policy against disabled people who need food to treat their condition.”

“Metabolically-disabled people enjoy public events just as other people do,” one of the suits reads. “However, the lack of an accessible public facility means that metabolically disabled people are excluded from accessing events, goods, services, and other programs offered by Defendant at the Public Facility.”

In filing the string of lawsuits, Reyes joins the ranks of other local serial plaintiffs who have sued various businesses under the umbrella of the ADA.

As The Post previously reported, five New Yorkers have filed a total of about 400 lawsuits against businesses for lacking wheelchair ramps, and two have filed around 30 suits against websites that don’t jive with the visually enhanced screen-reading software they say they need to navigate the web.

Reyes is being represented by lawyer CK Lee, who has filed scores of lucrative suits on behalf of disabled clients.

Reyes could not be reached for comment. But Lee insisted in an email, “These are not shakedowns.

“People are disabled, and their rights are being violated. They are simply seeking to enforce their statutory rights,’’ he said.

“People who are not disabled do not focus on these ADA claims, but heaven forbid they should one day become disabled.”

The Barclays Center website says anyone with special dietary needs should reach out beforehand to arrange “reasonable accommodations” for their condition.

Ford Amphitheater and the Music Hall of Williamsburg did not respond to requests for comment.