Possible cloudy eye and a "lump"

I have an African Cichlid setup in my 67 gal tank with various Peacocks and Haps (see signature). My very dominant male Sunshine Peacock is showing a bit of cloudiness in his one eye and has a small cyst like lump on his chin. Would Furan 2 be a good choice for treatment, or maybe Melafix, or is there another treatment would be a good option. He has beautiful bright yellow color and blue on his chin. I would like to try to treat him and avoid losing him.

Here is a couple of video stills that I just captured.

It seems to be clearing up each day without me doing much of anything. I'll keep an eye on it and let you know if I think it is getting worse. Thanks for the compliment on my sunshine peacock. He is a very dominant male and typically displays the bright color.

He is looking better every day. Today he is displaying to some of the females in the tank.

I did a pretty big water change two days ago and I think he is almost completely healed. He is very dominant so he sometimes bumps into decor and get little scratches. I was thinking of keeping MelaFix handy for stuff like that. Any thoughts?