The internet went wild when they noticed Jonas’ sparkling white smile was, uh, a little green.
"I want to be the spinach in Nick Jonas’ teeth," one person wrote.
"Is Nick Jonas on the #GRAMMYs stage with spinach or something in his teeth?!?" another person chimed in, along with a shot of the singer during the moment in question.
"Nick Jonas had food in his teeth during his performance and I think Joe and Kevin purposely didn’t tell him as pay back for breaking up the band years ago," someone else wrote.
"Anyone else notice this piece of food stuck in Nick Jonas’ tooth?! Like did no one check that?!" another person commented.
Jonas is being a good sport about the entire matter, joking about it on Twitter.
"And at least you all know I eat my greens," he wrote.