If I weren't dyslexic and ADD-ed, and if life were, like, 300 years long, I'd be a philologist. "Wicked" is in the NE, used as a superlative or intensive. Then "bad" comes into play, I think beginning in black English but spreading quickly, also as an intensive.
It's fascinating.
It was popular in the ‘80’s, but has fallen out of fashion since then. I recall a unique and somewhat mysterious variation, “wicked pisser”, which was pronounced “wickahd pissah”. Ah, the good old days.