That's probably pushing it.....it will depend on the quality of the inverter, wiring and if its a pure sine wave or not. It might work if it's the only thing plugged into and drawing off the invertor but my bet is it will cut out before your fries are done.
Did you try it at least? You probably won't kill anything, your inverter will just beep and/or shut down. Try turning down the air fryer and cooking for longer, and cook with the truck idling to keep the power stream constant.