@Mattricho, there may be differences in the set hight of each coil-overs if one tries to balance vehicle weight evenly across an axle (side to side) but such differences would be rather small.
In your case the difference in set heights seems massive. A simple check would be to measure from the wheel centre to the top of fender lip (just above the wheel) where both sides (left & right) should be the same.
With coil-overs, I also thought one of the green nuts was meant to be used as a lock nut and wound up hard against the other green ‘adjusting’ nut to hold it in place. If this wasn’t done, then something may have moved.
Pipped to the post be
@panhead