Jack in the Box (NASDAQ:JACK) stock had a great day following the release of the fast-food company's earnings. Beating expectations in its most recent quarter, Jack in the Box also announced that it is looking for guidance regarding its Qdoba Mexican Eats brand.

A Mexican-American food mash-up

During the earnings call, CEO Lenny Comma said the company is consulting with Morgan Stanley to find strategic alternatives for Qdoba -- not exactly breaking news, as it was mentioned as a possibility this time last year. However, business conditions have apparently changed enough for the company to renew its focus on the idea.

A picture of Knockout Tacos from Qdoba's menu, a taco loaded with chicken, salsa, and queso sauce.

Image source: Qdoba.

Details were scant, as Jack in the Box wants to give Morgan Stanley time to finish its review, and the board of directors will have to make some decisions before the company reveals more. However, Comma did offer this: "We said one of the factors that would cause us to reconsider our strategy with respect to Qdoba was valuation. It has become more apparent since then that the overall valuation of the company is being impacted by having two different business models."

Though it may be time for the two restaurant chains to separate, it has been a great deal for Jack in the Box. When it purchased Qdoba in 2003, the fast-casual Mexican food chain had 85 locations and $65 million in sales. Today, there are 700 locations with $800 million in sales as of fiscal 2016, making it the country's second-largest Mexican food brand behind Chipotle.

JACK Chart

Jack in the Box's share price has been a sight to behold since the company bought Qdoba. Data by YCharts.

Doing what others should have done

For the quarter, Jack in the Box beat on the top and bottom lines, which is significant considering the industry has been experiencing weakness since last year. Many chains have been coping with declining foot traffic and lower per-store profitability.

But while it was a beat, it was not a great performance. Rapid expansion in the past decade and a half has new restaurant openings outpacing customer demand, and the industry has suffered as a result. Qdoba was also discounting its menu last year, a strategy the company is now leaving behind. 

MetricQ2 2017 Same-Store SalesQ2 2016 Same-Store Sales
Jack in the Box (0.8%) 0.0%
Qdoba (3.2%) 2.1%

Data source: Jack in the Box. Chart by author.

Despite the recent weakness, Jack in the Box's purchase and development of Qdoba will still go down as a brilliant investment. Once upon a time, fast-food rival McDonald's made a similar move when it bought a stake in fledgling Chipotle in 1998. Chipotle had 14 stores at the time, and when McDonald's sold out in 2006, there were 500. History has shown the world's largest burger sold too soon, as Chipotle now operates over 2,300 locations.

What it all means for Jack in the Box shareholders

It appears Jack in the Box will spin off the chain, but how and when that might happen is yet to be decided. It's also possible Morgan Stanley comes back saying the company should hold its subsidiary tight -- much of this will depend on what Qdoba would fetch in the current market.

In the meantime, Wall Street thinks the news is positive. Stay tuned for more details.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.