1large zucchinihalved lengthwise and thinly sliced
1small onionhalved and thinly sliced
Coarse salt and ground peppe
Preheat oven to 450 degrees. Lightly oil a large baking sheet; set aside.
On a lightly floured work surface, use a rolling pin and your hands to roll and stretch dough to a 15-by-10-inch oval (if dough becomes too elastic to work with, let rest a few minutes). Transfer to prepared baking sheet.
In a medium bowl, combine chicken and barbecue sauce. Leaving a 1-inch border, scatter chicken mixture evenly over dough; sprinkle with cheese, then zucchini and onion. Season with salt and pepper.
Bake until crust is golden and cheese is melted, about 20 minutes. Serve immediately.