Is grill chicken burger fattening?
It's less fattening than most food (as in, less fattening than a "meat" burguer if you know what I mean).
The most important things to a customer these days is cleanliness. A burger joint that is sanitary is vital to a customer and will bring more. Also, healthy food that is scrumptious to eat is a big nessesity. Try using less grease and fattening products such as salt. People also look for themes. No one wants a boring plain burger grill.