The pattern on the wings says pullet. The comb is unusual, but so pale. 6 weeks now? I'm betting on pullet... there's just nothing about the coloring that says male. Still, an outside chance it's a late blooming cockerel.
Behavior is not the best indicator of sex. I had a huge EE chick, very bold and pushy, liked to jump up and cannonball the other chicks. She is 8 yrs old now, very mellow, and still laying eggs.

Conversely, I had some Serama chicks, 2 males were obvious at 3 wks. One chick was very timid and submissive... late bloomer male showed up at 5+ weeks.
See you again next week with a new pic?