how about that we didnt have a queen in alien (excluding the whole not being thought of) but perhapes the area wasnt safe for a queen to sit down and start morphing the idea of an alien morphing into a queen probaly takes alot of energy and puts it ina vulnerable state during that time, theres no evidence of chet being born a queen the chest had a normal head just mandibles, and there was a queen present when scar was hugged,
ripleys chest bursting growing as a queen inside her because it had the dog/ox alien eliminating any threat and protecting it.
in aliens we know that there is a queen produced but we dont know if thats what came from newts dad, that could have been a drone whos to say that the next ones werent the queen perhapes the colonist went back to teh ship to try and find more out