1 medium sweet onion, halved and thinly sliced
1 tart apple, cored and thinly sliced
2 tablespoons butter
2 Boboli or other ready-made pizza shells
1 1/2 cup barbecue sauce
2 cups cooked chicken, shredded
1 tablespoon fresh oregano (or thyme)
1 1/2 cup gouda cheese, shredded