I liked the idea of the Quickfire challenge: It reminded me of the Second City challenge in Season Four in which Richard Blais and Dale Talde had to make "green perplexed tofu," and famously came up with tofu marinated in beef fat and seared with grill marks. That kind of invention is, at least for the TV viewer who can't taste the food the contestants are serving, really appealing.
The rest of the episode? Not so much. I agree with Scott Tobias that we're now waiting for the lesser competitors to be knocked off -- though it was surprising to see Mike Voltaggio in the bottom bracket this week. I suspect, however, that it'll be a fluke.
I think a Restaurant Wars episode is in order, don't you?