I'm wondering if the crescent roll dough in the tube might work. I'm on Weight Watchers, too, and at one meeting they had a recipe for a chicken pie tart that used the low fat version of crescent roll dough. You unroll the sheets of dough and use two triangles to make a square. Since the tube of dough would make 8 crescent rolls, it would make 4 squares and that would be right for the pie maker.
Anyway, the lowfat crust along with cooked chicken, chopped onion, lowfat cream cheese, and a little milk made a tart that equaled 9 Points Plus value on Weight Watchers. They were called Chicken Baseballs because you put a mound chicken on top of the square of dough and pulled the opposite corners together to make a little tart. It was delicious and might lend itself to the piemaker quite nicely.