Can you repost with a bit more resolution? Some of us don't have the eyes we used to have
Initial thoughts would be the manifold gasket is leaking a bit, allowing oil that is unburned to leak out with the exhaust. That's pretty common. Removing the manifold and installing a new gasket sometimes stops the leak for a few years. You can also try torquing the manifold bolts, sometimes they come loose and allow the leak, too.
It's hard to see, but it may also be coming from the seam between the upper and lower crankcase halves. That's not as common.
Welcome to the forum!