Jessica Chaffin is an American actress, comedian, and writer. She is known for her role as Coco Wexler on Zoey 101.

Chaffin was born and raised in Newton, Massachusetts. She is a regular performer at the Upright Citizens Brigade Theatre in Los Angeles, often performing with her comedy partner Jamie Denbo. She has done many guest voice appearances on Nickelodeon animated programs. From 2008 to 2009, she worked with Amy Poehler as a writer and voice actor on the animated series The Mighty B! playing several roles, including that of Portia's cousin, Chelsea. Chaffin is also known for playing Coco Wexler, the girls' dorm adviser on all four seasons of Nickelodeon's Zoey 101.

Chaffin has made guest appearances on television programs such as Weeds, Entourage, and Curb Your Enthusiasm. In December 2009, her comedy pilot Ronna & Beverly (based on the popular stage show she performs with Denbo at the Upright Citizens Brigade Theatre) aired on Showtime. Ronna & Beverly was eventually turned into a six-part comedy talk show, which was co-produced by Paul Feig and premiered on September 10, 2012 on Sky Atlantic HD in the United Kingdom. Together with Denbo, Chaffin created the Ronna and Beverly podcast.

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