Yes, that looks like leaf injury from a pest that damages the leaf tissue. Opportunistic fungal infections can then result. To apply counter measures against the pest, it needs to be identified. Maybe it is a pest bug (that is the actual common name). If it is still present, you can monitor plants in the area, looking at both sides of the leaves, stems, etc during the day and night. You can also take frequent pictures of the affected shrub area from the same angle to see if the pests is still present or not. The affected leaves appear to be few so you can cut the laeves off or apply a general purpose fungicide to see if it controls the opportunistic infection caused by the pest but it is not much. If the pest has left, monitor for a few more weeks and make a note to check for bugs next year starting a month before you first observed the leaf injuries.
