Looks like Kellogg has a little Eggo on its face.

The cereal giant, whose products include Frosted Flakes, Corn Flakes and Eggo Waffles, found itself on the firing line on Thursday after the far-right news outlet Breitbart News launched a campaign calling for its readers to boycott the food maker.

As of Thursday evening, more than 150,000 had signed the Breitbart petition, the news site said.

Breitbart News, co-founded by Steve Bannon, chief strategist for President-elect Donald Trump, launched the broadside against the Battle Creek, Mich., company after Kellogg on Tuesday publicly stated it didn’t want its ads to appear on the controversial site.

Breitbart is not “aligned with our values as a company,” Kellogg said in a statement.

Breitbart, calling Kellogg’s action “un-American,” leaped into action with the hashtag #dumpKellogg, and headlined the story on its action a “breakfast brand blacklist.”

The battle, waged right out in the open, had tongues in the media ad-buying world working overtime.

“I’m not sure why [Kellogg] thought it was a good idea to promote that they were backing off the advertising,” said one marketing expert.

Others are supporting the cereal maker’s actions.

“Brands should stand up and demand that their media investments are spent in places that reflect their values,” said Harry Kargman, chief exec of mobile ad platform Kargo.

“If Kellogg’s believes that Breitbart does not reflect its values, it should pull its media,” he said. “If Breitbart wants to call a boycott on Kellogg’s, even better. Kellogg’s should embrace its position and take a stand. We are in a polarizing time with the last election and in the immortal words of Hamilton, ‘If you stand for nothing Burr, what do you fall for?’ ”

Kellogg’s stock has fallen 3.6 percent in the last two days in part because of the Breitbart brouhaha.

The shares were also affected by an Amnesty International report that claimed Kellogg, Nestle, Procter & Gamble and Unilever bought palm oil from sources where labor abuses were uncovered.

Breitbart’s petition drive against Kellogg, launched Wednesday, is aimed at persuading consumers to stop buying Kellogg products.

Kellogg was joined by other advertisers including Warby Parker, Allstate, Nest, EarthLink and SoFi. Some of their ads ended up on Breitbart because of targeting, or ads that follow users around the web.

Breitbart has 19.2 million users, according to ComScore, and has made a name for itself by highlighting provocative pieces with headlines like, “There’s No Hiring Bias Against Women In Tech, They Just Suck At Interviews.”

Corporate branding specialist Dean Crutchfield told The Post, “There’s nothing wrong with Kellogg pulling its business. For this media business to jump in and try to destroy them is exactly why they don’t want to do business with them.”

“To be clear, our decision had nothing to do with politics,” Kellogg spokesperson Kris Charles said. “We regularly work with our media buying partners to ensure our ads do not appear on sites that aren’t aligned with our values as set forth in our advertising guidelines.”