A number of us at ours have stopped eating there because of food poisoning from breakfast items. Youngest sister stopped after another location gave her food poisoning from what we presume was undercooked chicken. I guess what I'm saying is, get a burger and not a breakfast food or chicken. It is legitimately good food, if not a bit pricey.
If you wanna be "that guy" then I really like doing (by which I mean, making myself and just buying a "regular" burger so as to not have a mile long receipt)
Buns toasted both sides
Easy mustard on both buns
Creamy Pepper sauce added
Grilled Onions
Grilled Jalapeños
(When around) Smoked Cheddar cheese added, equivalent to meat amount
absolutely love it
Also, anyone ordering a Jr and removing the Tomato, Lettuce, and Onion... what's wrong with you?? That's a Justaburger Kid's Meal. Keep the onion and it's a Justaburger.
Varying by location (but every one I've gone to has let me do it), that's also one of the best tricks for value. Buy a Justaburger, ask to add lettuce and tomato. Bam, Jr for way cheaper. Can have the onion grilled, too.