You can find the deal in the "offers" when ordering online through the Jack in the Box website or mobile app.
Jack in the Box's Jumbo Jack features a grilled beef patty, lettuce, tomato, pickles, onions, ketchup, and mayo on a toasted buttery bakery bun. It normally costs $5.39 at my local Jack in the Box in Los Angeles but there's regularly a digital deal where you can get two for $5.
In other deals, the fast-food chain continues to offer free fries with any purchase on Fridays this year.
Jack in the Box was founded on February 21, 1951, in San Diego, CA.
Photo via Jack in the Box.