I think most players fidget during a Tournament, You only need to open your ears before a game starts and listen to the chips being shuffled, it can be deafening, It might reduce slightly once the cards are in the air, but it is still there.
The things is, Is it a Tell or just nerves of anticipation? Personally I don't read too much into it unless the person fidgeting suddenly stops, this is usually a sign they hit big and want to try and disguise the fact. Which of course gives me the warning light to proceed carefully.
When the fun Stops, STOP!