chicken need lot of buff.

they cant do assault in late game.

sometimes they are hobbrible at beggining, as long u kill their burrows.

shoud destroying nest make them stronger?

destroying nests is supposed to make them weaker and force them to "invest" in chicken tubes as opposed to actual units

this is to give the chicken nubs a vague semblance of how the actual game is played

Destroying nests make chickens weaker lowering their techs. If team work coop then nests can killed fast and there isnt problems with chickens.
If you want stronger chickens just don't destroy they nests. Then you face with blobers, powerfull long range arthy like bertha (chicken spire or something like that), mass air units.
If you want play harder game then try just random maps in hard or suicidal. Not only special chickens maps. :)

I think he means late game chickens. Once you beated up some dragons nothing happens really then queen coms and idles in front of defenses until its dead.
Queen should move direct into base not with fight command.
see: https://github.com/ZeroK-RTS/Zero-K/issues/688

thats why chicken need nuke squads.

each player counted 1 nukes artilerry chicken (explosion worth silencer but with 3 minutes cooldown).

and some small artilerry nuke mooks (like wyren) covered in anti air units.

this should give some players of trouble.

You just need to have xponen play as chickens.