dirty paws and other things

Charlie is getting dirty paws I have read on here that is could be a sign of an ear infection.

But I was wondering if it was cos he is cleaning his glands. He washes his face a lot but doesn't seem too bothered by his ears. When he is its his back leg that goes, not the front. His ears are clear, I can not see anything there.

Also he seems to be moulting a lot from one side and not the other. I mean this is hand fulls of fur I groomed off him this morning and he is still grooming that area his self this afternoon. Is this normal?

Eating well and pooing well and nothing seems to be bothering him elsewhere

please help guys, im not sure if it is vets jobbie or if he is ok and im over reacting