Spud Pesto Pizzas - Hot Starch-on-Starch Action!

One of the cardinal sins of menu planning is putting two starches together on a plate. There are a few exceptions, like Thanksgiving stuffing and mashed potatoes, or potato and macaroni salad at the company picnic, but it's just not something that's usually done.
There have been stories of crazed chefs (redundant?) that have refused a customer's request for a side of rice because they had ordered pasta. That's why I've posted the extra bonus clip below. It's from the must-see movie Big Night. I've posted it here a long time ago, but I never get tired of it, and it's fitting for today's recipe.Today's video recipe is a potato pizza with pesto, red onions, feta and much, much more. While it may sound odd on paper (or screen), it's quite delicious, and makes a good case for exceptions to the no starch-with-starch rule. Besides, it was a request from my mother-in-law, so what could I say? Enjoy!Ingredients in order of appearance:
cornmeal on pan
stretch pizza dough to cover
pesto sauce to cover
4 roasted gold potatoes, sliced
salt and fresh ground black pepper to taste
parmesan to cover
6 oz fontina cheese
1/2 sliced red onion
more pesto dripped on top
4 oz feta cheese crumbled on top