There are a few inexpensive food menu things that are under 500 calories. You might have to look further into the menu or take a few sauces off during your request, however it can work out. The Shake Shack single burger, for instance, is only 360 calories. You can get a cheeseburger at In-N-Out, without spread, for 480 calories. At Wendy's you can arrange a standard Mediterranean Chicken Salad for 480 calories. Indeed, https://fastfoodmenusprices.com/ even an Egg McMuffin at McDonald's is 300 calories.