when it comes to frying chicken, what age has the chicken became too tough? In my childhood farm years, we filled a freezer every year with young fryers and I don't ever remember it being too tough. On my first efforts since that time long long ago, I have found them a little chewy. the first I killed were 13 weeks. Now I realize I am not the cook my mom was, and I actually grilled mine, not pan fried in lard. I miss the days of entire meals fried in hog renderings; potatoes, chicken, wilted lettuce. I also miss the days my digestive system could take it.