At 10 weeks, with a pea comb that size and color, your chick might be a cockerel. (Single combs are often easier, because they stand up and make themselves obvious. Wattles are often helpful too, but not visible in chicks with nice fluffy beards. So Ameraucanas can be hard.)What would you say this chick is…hen or rooster.
Mom (brown) and dad (black) were Ameraucanas
10 weeks old…
I'm not positive about that chick being male, so either give it a bit longer or wait for a few other opinions before you do anything permanent.