New England Patriots -- Strict Food Restrictions Leading Up to the Super Bowl

The New England Patriots are one of the most disciplined team in football -- and that has even carried over to their eating regimen leading up to the Super Bowl ... TMZ has learned.

According to our sources, the team has been on serious lockdown this week when it came to meals. We're told in Indianapolis ... the players HAD to eat what was put on the table.

Our sources say team cooks came to the hotel and prepared the grub. Dinner last night was a choice of chicken, steak or fish ... with a side of vegetables.