The Newmarket handler has already enjoyed Derby and Juddmonte International success with the star colt and is counting down the hours until Longchamp’s feature attraction on Sunday.
Yet despite feeling fractious, Chapple-Hyam is in very positive mood and believes Authorized is in the form of his life.
“I can’t sleep and I just want it to be now – I can’t wait,” he admitted.
“However, I’d rather be like that than waiting to watch it on television after a Sunday roast.
“He’s drawn 12 of 12, which I think will be good as we can stay out of trouble.
“The boys couldn’t be happier with him – he’s cantered every day and is as good as gold.
“I’ve never been as happy with him as I am now.”
Chapple-Hyam is also delighted with the way Authorized has taken the journey across the English Channel in his stride.
“He’s at Chantilly and he’s tucked away with Tariq and Dutch Art (who run in the Prix de la Foret today),” he added.
“I’ll bring him to Longchamp on Sunday morning but he’s travelled well.”
And while the yard has endured a slow spell with some of its juveniles recently, Chapple-Hyam remains unconcerned – although he does point to the opposition posing a stern test.
He said: “Only the two-year-olds have not been right – there has never been a problem with the older horses.
“I expect a very tough race – there’s Soldier Of Fortune, Mandesha, and I like the German horse too (Saddex) – his form is good.
“I just hope and believe Authorized will be turning for home still on the bridle. It would be unbelievable to win the race and it’s something that would never happen to me again.”