Cook pasta according to package directions. Once ready, drain and set aside.
Assemble:
In a large bowl, combine the mayonnaise, Creole mustard, and Creole seasoning. Add the pasta back into the bowl, the hard-boiled eggs, bell peppers, celery, and red onion. Toss to coat everything with the creamy dressing.
Chill:
Refrigerate to chill for one hour and serve cold.
Notes
Use Grey Poupon mustard if you don't have Creole or yellow mustard in a pinch.