Jordan appears in "The Green House", where she was booing Lincoln along with the rest of class, except for Clyde, and telling him he was going to throw his social life out the window.
Jordan next appears in "Lincoln Loud: Girl Guru", where Andrew gave her a Dutch oven. This angers her, and so she chases after him to give him a wedgie.
She then appears in "The Waiting Game", where she makes yet another small cameo when Chandler was passing out the invitation using a plunger.
Jordan appears in "Dance, Dance Resolution", as she was one of the girls whom Zach, Liam, and Rusty try to impress, and fail. Later at the Sadie Hawking Dance, she appears dancing, and later she was kissed by a boy who was hit by a volleyball.
She appears again in "Study Muffin", saying "hi" to the substitute teacher Ms. DiMartino, while the male students were fawning over Ms. DiMartino.
She makes a non-speaking cameo running around during a dodgeball game in "Back Out There", then is mentioned twice after. Two seconds after the whistle blew signifying the end of the game, Lincoln is hit in the eyes with a ball and says "Hey, Girl Jordan, the whistle blew", accusing her of doing it while pointing his finger upward. The ball came from offscreen so Jordan is not shown throwing it. Twenty five seconds later, Clyde is hit in the back of the head and spinning to look behind him then shaking his fist, repeats what Lincoln said earlier. Jordan is still not shown throwing the ball here either and Clyde could not have seen who threw it.
The credits to "Lincoln Loud: Girl Guru" refer to the character as "Girl Jordan". Chandler also hands out invitations to "Girl Jordan" and "Boy Jordan" in "The Waiting Game", in reference to there being two Jordans on the Loud House staff (Jordan Koch being the real "boy Jordan").
In "Frog Wild", when Mrs. Johnson, and the rest of the class are leaving right before Lincoln and Lana go into the classroom to free the frogs, we see that she's wearing the wrist device from "The Green House".
There are actually two versions of Girl Jordan. One is shorter, wears a pink shirt with blue shorts, has her hairband come up and has a tuft of hair at the top of her head. The other one is taller, wears a yellow shirt with a blue skirt, has her hairband go back, and a line through her hair.