He just looks like a hairless Klingon to me. But still a Klingon. The ridge pattern is more like the movies. It's similar to General Chang.
If this is what Klingons always looked like but Roddenberry just didnt have the makeup budget, headcanon accepted.
This looks midway between TOS and TNG and I like it. They refined the look, they didnt change it beyond recognition.
As for the earrings and hair and facial hair:
Styles change. Look at the men's facial hair styles between the 1960s and the 1980s. It didnt stay the same.