Oven Baked Chicken

This is nothing to boast about seriously. For me who knows nothing about cooking and baking, using the oven is a new thing to me. Really.

So don't laugh when you see this, my very first try at a oven baked chicken chop.

Anyone can advise how to stop the oil from splattering within the oven? The top of my oven is covered with a small amount of grey which I cannot wipe off. Also, what pots are good for baking food? The grey tray was for baking my brownie earlier in the year. Can use the same pots and trays for baking and cooking?

See, I told you I am a super novice at the use of an oven.