Christina Oxenberg took to her blog after the event to write about the misfortune of being seated next to the actress.
"Since she arrived on the late side I had a chance to make some sales to new and repeat customers..." Oxenberg wrote.
"Then the divinity in question arrived with hubby, children and a couple of massive bodyguards. The worshipers blocked my view of the whole world, abusing my tiny territory upon which to abandon their trash or lean their sorry....."
As everyone lined up to have Paltrow sign a copy of "It's All Good," Oxenberg hit the snacks.
"I made a plate of miniature sloppy hamburgers, stinky steak sandwiches, and the like and hauled it back to my piece of table," she writes.
"Gwyneth’s bodyguards blocked my re-entry despite my assurance I was a just an author and pointing at my name tag, 'No!' they growled, body blocking me. So I was forced to crawl under the table," Oxenberg wrote.
"And there I sat with my meat products, wafting the excellent smells toward my sleek vegan neighbor. She ignored the siren smells of protein. We never did say hello, although I did try to sell my book to her sleek vegan children. No bites."
Oxenberg made waves in the '90s with her novel "Royal Blue," which loosely draws on her own royal heritage as the daughter of Princess Elizabeth of Yugoslavia, second cousin to England's Prince Charles. Oxenberg's sister, Catherine was on "Dynasty" in the 1980s.
The event, co-founded by Alec Baldwin, also featured Jay McInerney, Nelson de Mille, A.M. Holmes, Clive Davis, Nile Rodgers and Kitty Kelly signing books.
McInerney, who hosted Oxenberg at his Long Island home, tweeted about the dust-up blasting Paltrow for using a ghostwriter. Word even got around to author Candace Bushnell.
Author's night at East Hampton Library highjacked by movie stars with ghost- written cookbooks. http://t.co/CaDr3XMVJF— Jay McInerney (@JayMcInerney) August 12, 2013
Author's worst nightmare: sitting next to Gwyneth at a signing. Hysterical. http://t.co/RYM2B54O4j— Candace Bushnell (@CandaceBushnell) August 13, 2013
But Paltrow, who has been repeatedly accused by the New York Times of using a ghostwriter for her cookbooks, insists it's not true. "Love @nytimes dining section but this weeks facts need checking," she tweeted in response to one such accusation. "No ghost writer on my cookbook, I wrote every word myself."