If you extract an impacted wisdom tooth on one side (and there's none on the other) will it change the jaw structure/cause facial asymmetry?

No: In fact if you remove the tooth it may help with symmetry but any changes will be slight.

No: It should have no effect.

No: No change would be expected. Remember, it is impacted and in the bone. The bone will heal back in almost fully. Good luck.

No: Removing a single wisdom tooth will have absolutely no effect on facial symmetry or jaw structure.