Without seeing the car in the flesh, it's impossible for us to diagnose, but it does look like the bonnet is sitting a little high on the near side. Check the bonnet hinge on that side, there may be a little play in it and could be adjusted easily. It's possible that the bonnet has been replaced at some point under corrosion warranty and just wasn't fitted correctly, or not fitted correctly in the first place. I believe you can check with Nissan with the registration number or chassis number and they can confirm if there has been warranty work done.
Of course it is completely possible that there is something dodgy going on, but I for one am not so quick to jump to conclusions when there are other options.