So the Ham TVP was easily rehydrated - pour some hot water on (not too much, to prevent losing flavor in drain off water) put on a lid, let it sit for for 3-5 minutes, add a little more hot water if its too chewy, and when all the water is absorbed, it's done.
Hydrating the pineapple is a little more tricky. I used cold water, but after 5-10 minutes, the big chunks of pineapple were still far from being hydrated. 15 minutes - still not enough. Thankfully, in a can on FD pineapple, there are large chunks, and small crumb type bits. Those small bits rehydrated beautifully, and this was the perfect way to use up the smaller pieces, saving the bigger pieces for snacking on (FD Pineapple is the yummiest snack straight from the can!) So I used the smaller bits on the pizza and left the larger pieces in their rehydrating container and stuck them in the fridge. This morning, they were rehydrated wonderfully.
So with pineapple, small pieces will rehydrate in cold water in 5-10 minutes. The large chunks are best left in cold water to rehydrate in the fridge overnight.
As for the pizza, my friends said the sauce was great (tomato powder reconstituted with water to desired consistency, then seasoned with garlic salt and italian seasoning). The toppings were pretty good. As an every day replacement of ham and pineapple pizza, they gave it a 5. But as an emergency food, they said it was easily an 8 or 9.