You can get a chip in a tooth easily repaired. The dentist bonds a piece to exactly match the chip. Can be done in an hour.
Sure, could be, and having looked at the rest of the thread it does appear like the guy got it repaired in more recent photos.
But the real question is: why are we arguing about this like it’s still the year 2000? Surely someone on FR has access to facial recognition software that can compare the faces and give us a definitive answer...