The Jr. Bonus Jack features a jr. beef patty, American cheese, lettuce, pickles, and secret sauce on a toasted plain bun, while a Jr. Good Good Chicken Sandwich features a breaded and crispy-fried chicken patty served with Swiss-style cheese, lettuce, pickles, and Good Good sauce on a toasted plain bun.
You can find the $5 Jack Pack now at participating Jack in the Box locations chain-wide for a limited time (prices may vary--it's $6 here in Southern California).
Photo via Jack in the Box.