Tony was already pissed at Christopher for disappearing to LA during both the Vito search and weekend of Notre Dame/Michigan.

And Christopher was too stupid to realize how badly he screwed up -- the Benny/Artie situation gets out of hand, and all Christopher brings Tony is a woman's watch, a useless trip and a dog purse. Then as Tony chides him on the Benny situation, Christopher triples down on the stupidity by playing the Adriana card again.