Pizza burned roof of mouth, does this require medical attention?

No necessarily: It may take a week to go away, but if it starts feeling worse or if does not start feeling better, then i would advise that you see your dentist.

No: Use orabase or oragel or chloraseptic numbing spray.

Not usually: Pizza burns on the roof of the mouth do not usually require medical attention. If pain persists for more than a few days see your periodontist or oral surgeon.

Pizza burn: Ususally resolve on their own if you avoid the area when eating and try to keep it clean, using warm salt water rinses, you can see your dentist for any follow up or peace of mind and they may provide you with additional treatment, they may send you to a specialist like an oral surgeon if deemed necessary.