Does this mean the chick is male or is there something wrong?

[ChickNanny13]

Not sure what "lump" you're asking ... IF it's that bulge on its chest, that's it's crop ...
chicken crop

 

[Sussex19]

All I see is the crop, which can get very full and hard feeling if its just stuffed itself.
Nothing to worry about, but you could check it goes down after not eating over night : )