Is it still legal to discriminate against fat people in the US for food service?

He's right that there is no federal protection against discrimination on the basis of weight. There is, however, protection against discrimination on the basis of disability, so if the obesity is a symptom of some disorder, there could be something there.

He's wrong about what else federal law covers, and he's also mistaken if he thinks that federal law is the only thing he has to worry about.

In short, he doesn't sound particularly well qualified to be a hiring manager.

Fat people are not a protected class and can be discriminated against. Airlines do it all the time when they charge a fat person the cost of two seats.

Well he's confused if he thinks the Constitution grants anyone protection. The LAW does, and some States still don't care about sexual orientation. Anyway though no State has yet to consider weight when it comes to protected classes. He has a point though, it's a business that is all about appearances.

discriminating against anybody for any reason is illegal. There are legal charges and lawsuits that can, be brought against you, if the victim really wanted to pursue them

Perfectly legal.

your boss is ignorant bigot obviously his hatred towards fat people is a result from him being fat at one point in his own life as a child bullied and abused by others.

Fashion stores only hire attractive people with style. It's the same with hairdressers. I don't think there is anything illegal in what he is doing.

Yeah, its perfectly legal in most states. I wouldn't worry about it and just be glad that you got a job and hope those "fatties" can get a job elsewhere

He should really take a look at your yahoo profile. He wouldn't hire you either, dear.

Hid business, he can hire as he sees fit.