Making "pizza mato" strawberry rhubarb pie

We have had some pretty stormy afternoons in Denver this June, making for difficult outdoor adventures as planned. I had a lot of strawberries and some rhubarb and so I decided that during today's tornado/ flash flood/severe thunderstorm warnings, LT and I would make a pie (something my dad made often when I was younger)! He was very serious, as you can see in the video, about making his "pizza mato".
***Yesterday, we took him to Parisi and he watched a man make pizza after pizza after pizza (mostly tomato pizzas), which might be the reason that everything we made today was a tomato pizza.