Send the colonel in!

[Aaron]

[Scene: Monica’s Restaurant Kitchen, Monica is cooking as a waitress enters carrying a plate of food that has been sent back.]
Monica: She sent the chicken back again?!
The Waitress: She says it’s too dry now and she wants to come back here and explain to you exactly how she wants it.
Monica: Well fine! I want to meet this chicken expert! Send the Colonel in!

I understand what the colonel means but why did she say to the person as a colonel??

[Casiopea]

Colonel Sanders (Kentucky Fried Chicken) is considered an expert. Meet the "Colonel". Click here: http://www.kfc.com/about/colonel.htm

[Aaron]

Colonel Sanders (Kentucky Fried Chicken) is considered an expert. Meet the "Colonel". Click here: http://www.kfc.com/about/colonel.htm

Brilliant! Thank you so much~ Nobody but native speaker could understand that.