Jen was a waitress at Happy Cook. She identified Josh and Gary for Gwen Cooper during her inquiry about Eugene Jones. She had given Eugene his banana milkshake the night of his death, and witnessed Josh and Gary beating him up to obtain his Dogon sixth eye. (TV: Random Shoes)
Behind the scenes
Though this character appears only as "Waitress" in the Random Shoes credits, "Jen" is clearly visible on the character's name tag.