As a test, I made five of Trader Joe's popular frozen meals — shrimp burgers, chicken fried rice, chiles rellenos con queso, carne-asada burritos, and French onion soup — in my air fryer.

For burgers, sandwiches, etc. you'd go to the grill line. Then there's a separate line for customers who just want to order frozen custard and soft drinks. There are also designated spots for pick ...