Your post and pictures are quite interesting to me. My family and I make what we call campfire pizza over the campfire.
I have a grill that suspends out over the campfire, and a steam table rectangle pan we use for the cover.
We use English Muffins cut open to have 2 round pieces, then spread pizza sauce on the muffin, add our favorite toppings, sprinkle grated cheese of choice on top.
Then we place the loaded muffin on the grill, put the lid over them, this gives us an oven effect over the fire and cook our campfire pizza's to perfection.
Takes a little practice to get it right, but sure makes for a campout delite / treat.
I wish I had some pictures to post, sorry none available right now.
Rich-