Chef Pat is mean, rude, bad-tempered, abusive, and vengeful lunch lady who despises for the Loud kids because in the past that Rita not letting her to invite for her graduation party. While Chef Pat gives the students good lunches and have revenge on Rita, she gives the Loud children bad lunches and make their lives miserable. As in the end of "Diss the Cook", she eventually becomes good-hearted, friendly, giving, and selfless and has now giving the Loud kids good lunches after she has been invited to her another graduation party, but however she can be also cranky and short-tempered and still redeemed completely.
Biography
According to "Diss the Cook", she went to Royal Woods High School with Rita, Flip & Mrs. Gurdle and was best friends with them. Towards the end of their senior year, Rita handed her peers invitations to her graduation party, but seemingly not Pat. However, while Rita secretly slipped an invitation to Pat, Pat didn't notice it due to being distracted by Flip trying to steal her drink as the invitation was left in the book that she put away. As such, she grew up bitter, started working at Royal Woods Middle School, and would direct her vengeance on Rita's children by giving them terrible lunches and make their lives miserable. Her feelings only intensified on Lori's first day at middle school, where she got distracted by her cell phone and accidentally spilled sticky soup on Chef Pat's hair.
Chef Pat first appeared in "Kernel of Truth" where Stella Zhau does a report on the Action News where she and Chef Pat teach the viewers how to make a three bean chili. When Stella notices a shoe in it, Chef Pat reacts and throws her hand over the camera.
In "Saved by the Spell", Chef Pat plays music on the boom box when asked by someone to drop a beat.
In "Diss the Cook", Chef Pat plays a major role in this episode and revealing her true nature. She's been continuing her vengeance on Rita's children by giving Lincoln and Lynn inedible meals throughout their time in middle school. After one too many terrible lunches from Pat, Lincoln and Lynn agree to investigate her vengeance on the Loud children. Lynn learns from Luan, Luna, and Leni that they didn't do anything to incur Pat's wrath, so she and Lincoln assume Lori was responsible. They convince Lori to return to Royal Woods from Fairway University and apologize to Chef Pat, but it still doesn't earn Lincoln and Lynn delicious food. Venting their frustrations at Flip's Food & Fuel, the two learn of Chef Pat's former friendship with Rita from Flip, and Rita herself clarifies that Pat never accepted her invitation to her graduation party. When they confront Chef Pat on the matter, she eventually realizes the truth about why she never noticed the invitation and retrieves it from the book in the high school library. Feeling guilty, Pat promises to give the Loud kids good food from that point onwards, and the Louds hold a "graduation party" reenactment to give Pat what she wants. Though she gets angry when Flip crashes into the food that she brought upon using the slip "n" slide causing him to flee in the hovercraft that Albert was piloting as Chef Pat pursues him.
Trivia
Chef Pat is originally mean and vengeful towards the Loud children because in the past that Rita not letting her to invite for her graduation party.
She is also a true villain until in the end of episode "Diss the Cook" which she has redeemed completely.
In the rest of episodes, Chef Pat does not shown to be antagonist anymore.
