Native is wonderful. I've been going to the one in Costa Mesa for a couple of years now and I was not disappointed in Chicago. The beauty of it being fast-casual is that it is extremely consistent. I've never been disappointed. The menu is extremely solid. The Oklahoma Bacon Cheeseburger is DELICIOUS! The chik'n fingers are amazing and I recommend getting buffalo sauce AND ranch and dip in both or mix the two.
The scorpion burger is good if you want something a tiny bit lighter and more wholesome- it's awesome. The Reuben is the best vegan Reuben I've ever had, Tony thinks it's even better than the one he had at the Chicago Diner! (Though that one was really really good too!)
I haven't had a single thing at Native that I haven't liked. Not one thing. If you're having trouble deciding what to order just go with the special- you get a side with your meal for free and everything is delicious so you can't go wrong!