Question: how long does it take to cook a chicken at 300?
Answer: Preheat oven to 300 degrees F (150 degrees C). Advertisement.
Rub chicken with salt inside and out. Squeeze lemon juice from lemon halves over outside of chicken, then rub paprika over all. ... 
Bake at 300 degrees F (150 degrees C) for 3 hours, basting with water as needed.