Mr. and Mrs. C packing for the event.
Albaclucky Costume Eggs-travaganza is a costume convention held in the Chica Show episode "Bock-a-Toodle-Loo Chica." In the episode, Mr. and Mrs. C go to the event overnight without Chica, who is having a fun sleepover party with Kelly in the Costume Coop.
The "Albaclucky" city name was also used in the episodes "Super Chica" and "All of a Kind Chica." It is presumably a reference to Albuquerque in New Mexico.