That's pretty funny. I raise chickens for eggs, not for meat. I have 10 of them. I also know that their eggs can be influenced by what they eat. Mine will start laying in about 9-10 weeks. We plan to feed them organic chicken feed supplemented with organic garden greens. Anyway grocery store chickens have a VERY short life. They are slaughtered at 6-8 weeks of age depending on the breed. My chickens are 11 weeks old and they're tiny. The conditions for regular store bought chickens are pretty bad. They leave the lights on so they eat constantly. That way they can slaughter them while they're still tender. After all of this, I still eat chicken. It's too important for me to get the protein. Plus, if I stop eating it in protest, it's not like the whole operation will shut down.
As a matter of fact, commercially raised chickens actually contain fewer pollutants like dioxins than chickens raised in healthy, happy conditions do. Free range chickens that get to peck in the dirt consume dioxins that come from nearby refineries and factories. The ones that stay locked up consume a lot less.