There are hundreds of images of "Christ Pantocrator." It is simply not enough to say that "Christ Pantocrator" is the image of Christ. You have to point to a specific version by that name. I see the one you have posted. What is its orgin and time?
I believe the image in post #2 is from the Haghia Sofia in Istanbul (formerly Constantinople) which used to be the capital of the Eastern Roman Empire. Haghia Sofia was the HQ for the Eastern Orthodox Church for centuries. Someone please correct me if I'm wrong. There were similar mosaics I saw in another church in Istanbul called the Khora church? Anyway, it was 16 years ago and I wasn't paying much attention to churches when I was 19 and in the Army.
This one is from the Hagia Sophia.