Did you get more then one of that breed? Hard to compare with just one. Looks boyish though.
Are you SURE it is only 5 weeks old?
Them are some thick legs too.
if its a boy that makes 3 out of the 12 chicks i got boys (4BAs 2 girls 2 Boys, 4 Isa Brown 3 girls 1 boy?? 4 california whites all girls)Looking at them together screams boy.
Man what a downer. I am sorry you drew the short straw. (Unless you want a boy)