Old Bay Seasoning Flavored Utz potato chips
I think I've seen them at some of the bigger grocery stores in Brooklyn. But, according to the website, you can e-mail their sales rep email@example.com for a more specific response.
Their mail order isn't bad, either. I use it to keep my ex-Bawlamoron best friend up to her neck in crabby, chippy goodness in the wilds of Vermont.
BTW, it's $8.50 for a medium carton of Crab Chips.
Alternately, you could just buy some Grandma Utz and douse 'em in Old Bay, but that's probably not what you're after.
re: Kat Kinsman
can't vouch for manhattan, but virtually every supermarket along 37th avenue in jackson hts--trade fair @ 75th st, met food@ 76th st--has that flavor on an everyday basis, usually marked down to 99¢ a bag.
they also have an odd "salt and pepper" flavor that's not quite salt and pepper, not quite salt and vinegar, but which bears an interesting tangy aftertaste...