You can get a huge variety in comb and wattle development in male chicks. Pullets too for that matter. Some just mature a lot earlier than others in size, behaviors and appearance. Yes, even though the others look like that, I agree that is a male. It’s not just the color of the comb and wattles but the size of both, especially the wattles. At 8 weeks a pullet just won’t look like that.