Why are some bricks crooked in my attic wall?
There's a double layer brick wall between the two residences and the chimneys tied into this. It looks like when your neighbour's chimney was removed some of the bricks in the wall were disturbed and then replaced slightly crooked.
crooked bricks look untidy, but are not signifiantly weaker than perfectly aligned bricks. If there were cracks, that would be a warning sign, but crookedness by itself is not something to worry about.