CHRISTINA Machamer bested Louis Petrozza in last night’s “Hell’s Kitchen” season finale – wrapping the show’s most successful season to date.

Machamer, 25, fresh out of culinary school, now becomes the senior chef at “Kitchen” host Gordon Ramsay’s new restaurant – Gordon Ramsay at the London West Hollywood.

It’s a prize valued at $250,000, and Machamer might want to invest in some Tums, since she’ll now be watched over by the famously foul-tempered Ramsay.

Machamer’s victory caps a very successful fourth season for “Hell’s Kitchen,” which surpassed last season’s total viewership numbers by a whopping 26 percent – and was up significantly in adults 18-49, adults 18-34 and teens.

The fifth season of “Hell’s Kitchen” has already been shot and is expected to air early next year.