Opinion: I think the main issue with your question (and scores more like it) is that you are not actually asking a question about the fundamental nature of a fictional world. A quick review of our Tour reveals that we're here to help writers and game designers and worldbuilders with problems pertaining to the creation of fictional worlds and settings: everything from the physics underlying your reality to the entire universe you want to build. You didn't show us anything to indicate that you are trying to build a fictional world, thus, your question really isn't on topic here. The key take-away term here is "universe you want to build".
There has long been a simmering debate over "real world questions". I at least am of the opinion that real world science questions are on topic so long as there is reasonable and demonstrable fictional worldbuilding context to justify the question being here in this forum. This is what gives us direction. Otherwise, real world science questions should be addressed to real world science forums.
Your query, for example, shows no reasonable or demonstrable worldbuilding context. Just "having a space station up there" is not sufficient context. After all, in the real world, we've got a space station up there from which a pizza could conceivably be launched Earthwards with delectable results!
There are other issues that could be legitimately raised with your question: did you google heat of reentry and typical pizza baking methodologies? A standard brick pizza oven easily heats in the 700 to 800 deg F range. 3000 to 5000 deg F is cited as fairly normal heats of reentry. That's enough to cook a pizza. (Your question could be closed for lack of basic research.) You don't provide enough information about pizza protection or heat venting, though you hint at box design issues. (Your question could also be closed for lacking detail or focus.)
: You've added some good background, which can only help in drawing out creative answers
rather than just a couple numbers and equations. You've also altered the question in a good way with the addition of This, however, raises a question - Is the heat from re-entry enough to cook a pizza? Is it even possible to build a container able to capitalize that heat and cook the pizza inside?
Now you're no longer asking "what is the physics" but rather "how can I apply the physics to a cultural (& therefore worldbuilding) problem!" Well done!