Check the carriage is tight and not wobbling. Check any grub screws to make sure they are tight.
I mean it doen't look that bad unless its worse in person. I had bad layers once that I eventually tracked down to a partial clog in the hotend. Not enough to jam the extruder, just like a coating had formed above the hot zone that increased friction and made extrusion irregular.
These things can be caused by almost anything unfortunately sorry.