A California woman has accused the popular chain in a lawsuit of false advertising after it trumpeted on April 27 that it was the first national restaurant company to use only ingredients that are free of controversial genetically modified organisms, or GMOs.

In her lawsuit filed Friday in federal court in San Francisco, the plaintiff Colleen Gallagher also alleged that Chipotle violated the Federal Food, Drug and Cosmetic Act because its food labeling is false and misleading, and deceived diners into paying more for their food.

"As Chipotle told consumers it was 'G-M-Over it,' the opposite was true," the Piedmont, California resident said. "In fact, Chipotle's menu as never been at any time free of GMOs."