Yes, there are business owners willing to fight city hall. Earlier this year we saw a Chapel Hill hookah bar fight Orange County over the smoking ban. In the end, Hookah Bliss closed its doors after a year-long fight. Now comes the story of a Chapel Hill cooking school — C’est si Bon — that has sued Orange County over a permit the county says the school must have or it will be shut down. Another school — A Southern Season — is trying to persuade local leaders to support an exemption in the law. The dispute is this: Is a cooking school a restaurant? The schools say no. The regulators say yes.