According to the law, not the "disabled" person. And SOME people are fat through no fault of their own, although I'd say they were in the distinct minority. But the bottom line is this: an obese person has a disability IN THE EYES OF THE LAW, and that's all that matters. Slam-dunk and the first to file will likely be in the money.
So. . .I happen to be flying SW out of Baltimore on the 26th. . .excuse me while I head for the nearest Krispy Kreme (g)