Purchased the house/property with .41 acre pond in 2017. Have used pond dye every year. This is the first time I've had this surface algae / scum.

Pond is aerated. I hand feed optimum, and have kept the tightest schedule of feeding nearly every day this season, which may be contributing.

Any advice on what it is and what to do with it?

I have a bottle of Cutrine-Plus algaecide that came with the house.