The tells for your chick that make it very definitely an Easter egger are the muffs (fluffy cheeks), slate legs, wild type down pattern and pea comb. There are a few factors that can result in runty or slow to feather chicks, no way for us to know exactly why, but I agree that it's more in line with how feathered a 2 week old chick would be. Although it really is too early to know for sure, so don't write this chick off yet based on this, but slow feathering, plus well developed slightly raised comb (though still yellow), plus what I've only thought to call "grouch face" I'd guess that to be a cockerel. Junbuggena is the expert here on Easter eggers, I've raised quite a few but am not an expert, just as observant as I can be.
Best wishes.