Sounds strange to me.
I'd say over the rear axle, depending on how much it weighs.
Then make a wood rack behind it or in front of it.
Also the pizza fixings in some kind of storage space, somewhere.
Steps to get on the bed.
A ten pound fire extinguiser could also be handy.
Bring it to the Home Coming next spring.
We can try it out then.
Don
I have seen a truck with the oven on the front third of the bed and another truck on the middle third of the bed.