It should be thawed first (especially if it has a giblet package inside of it!) If you need it to thaw quickly, you can put it in a sink of lukewarm water (leave it in the package or wrap it in...
It can't be emphasised enough that you must defrost chicken before cooking, either at room temperature or, even safer, in a fridge if you have time but that will take a day or so. This is because raw...
In a 400 degree oven, about 20-30 minutes. A slower oven will increase cooking time, of course. It depends on what your goal is (how you want the meat to cook) and often on what else you're cooking...