OCD, the Dude, and Me (Hardcover) by Lauren Roedy Vaughn

With frizzy orange hair, a plus-sized body, sarcastic demeanor, and "unique learning profile," Danielle Levine doesn't fit in even at her alternative high school. While navigating her doomed social life, she writes scathing, self-aware, and sometimes downright raunchy essays for English class. As a result of her unfiltered writing style, she is forced to see the school psychologist and enroll in a "social skills" class. But when she meets Daniel, another social misfit who is obsessed with the cult classic film The Big Lebowski, Danielle's resolve to keep everyone at arm's length starts to crumble.