<p>On a recent day, KFire owners Ben Kim and Eddie Hwang had 13 catering orders for lunch and not enough delivery drivers at their fast-casual Korean barbecue restaurant in Old Town. So Kim made an unexpected delivery to the University of Chicago Law School in Hyde Park. </p><p>“Everyone wants lunch at the same time,” he said.</p><p>For the two friends, it was just another day of navigating the challenges of running restaurants.