There's plenty of room for improvement.

<40s: Pressurize the cooking chamber like an autoclave (KFC fryers do this!) Use decompression to get a nice puffy crust edge, like a chinese popcorn bomb.

<20s: Add a microwave emitter in the oven floor to ensure the interior cooks before the outside gets charred.

<10s: Raise the temperature to cone 10, with a reducing atmosphere to minimize charring. Mount a passive Q-switched laser overhead to blast away any inorganic ash that forms on the surface.

<.0000000005s: inertial confinement, I guess