Why is the meatus of my penis slightly white on one side of the meatus compared to the other? is this normal or concerning? its mostly pink though?

The penis is a very circulation dependent organ. Blood vessels and capillaries supply the organ with an influx of blood during erection and drain away that same blood when flaccid. Because of its highly vascularized surface, any slight pressure can cause the constriction of the capillaries resulting in a pale appearance. Any slight deviations of the penis due to shape/scar tissue can cause this.