The meal box, part of Jack in the Box's late-night menu, has a half-serving of curly fries, onion rings, two tacos, five mini churros, three crispy chicken strips and includes a small drink. The price is $4.20 -- April 20, or 4/20, is "Weed Day" -- plus tax.
"We are about welcoming all of our guests, no matter what they’re craving or why they’re craving it," chief marketing officer Iwona Alter said in a statement.
Jack in the Box could be hoping this antidote for pot smokers' hunger creates a buzz that will elevate the brand.
"They're going to leap upon anything they can. It’s an occasion. Why not?," said Robert Passikoff, founder of Brand Keys, a New York-based brand research consultancy. "The brand generates the kind of audience that won’t be offended by it."
» Northern Michigan University offers marijuana studies degree
Sixty-four percent of Americans support legalizing marijuana, according to a Harris Poll conducted in October.
While Totino's has occasionally posted billboards suggesting that people who are stoned should eat pizza rolls, don't expect pot-related fast-food meals to become a trend.
"McDonald's won't do it. Burger King won't do it," Passikoff said. "Jack in the Box has nothing to lose by doing this. But a major brand would never do it, because they would be afraid of backlash from people who don’t have open minds about marijuana and drug culture."
Founded in 1951, Jack in the Box is a regional brand with more than 2,200 restaurants.
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The chain announced on Dec. 19 that it was selling its beleaguered Mexican fast-casual brand Qdoba to the publicly-traded investment group Apollo Global Management for approximately $305 million.
In November 2016, Californians approved Proposition 64, which legalized sales of recreational marijuana for adults, effective Jan. 1, 2018.
Jack in the Box stock was $99.85, up 80 cents or 0.81%, in mid-afternoon trading on Thursday.
Contributing: Trevor Hughes
Follow USA TODAY reporter Zlati Meyer on Twitter: @ZlatiMeyer