Question: how long does it take to cook a frozen chicken in the oven?
Answer: The general rule is that frozen chicken takes 50% longer to cook than when it's thawed to start. You can therefore consult a reliable source for chicken cooking times and multiply that by 1.5. The chicken pictured here is 4 lbs., which would normally take 1 1/4 to 1 1/2 hours to cook.