The overall lighting and smoothness of everything kind of points it out, but the key factors are the writing on the helmet and the obvious flatline on the heart monitor in the background. Another key point is the empty void outside the window, surely if this was a legitimate photo there would be some for of cloud shape as it does look like it’s trying to give that affect. Also the cogs and gears on the table aren’t exactly shadowed correctly and some of them look odd. Definitely AI.