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Are your sprockets correctly installed/ is your wheel installed correctly?
Any little dirt or road grime could have fell in between the mating faces and misaliging them?
Oem/correct sprockets for the bike?
From the neglectful few times I remember adjusting my chain there was a fair bit of play in the adjusters markings try seating them completely forward or aft before you start your adjustment to check they're level to begin with and work back/forward keeping them mated just so you're not concerning yourself over slop.
You've got 2 different measurement methods so one might be wrong (sure your cheap laser is square?)
Try to use one method for both to rule that out
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