'Biggest Loser': Ex-NFL Lineman Says You Jacked My Logo!

"The Biggest Loser" needs to drop more than weight ... its new logo is a total rip-off, according to a new lawsuit filed by former NFL lineman LeCharles Bentley.

Earlier this year, the NBC show decided to drop its original tape measure logo for a new stylized "BL." Bentley, a former Pro-Bowler, says 'Loser' screwed up because he trademarked a very similar logo in 2013 for his O-Line Performance company.

Bentley says he sent a cease and desist letter, which was ignored ... so now he's suing NBC Universal and the producers for trademark infringement. He wants the logo changed, and a cut of the revenue 'Loser' made while using the new one.

Luckily for all involved, this will be handled by lawyers -- LeCharles goes 6'2", 300-plus pounds.