Preheat oven to 200°C (400°F) and line baking tray with parchment paper.
Lightly flour a surface and roll out the pizza dough into a rectangle about 1/4 inch thick.
In a large bowl, mix chopped chicken, bacon, spring onions, cream cheese, mozzarella, 1/2 cup parmesan, red chilli flakes, and Caesar dressing. Season with salt and pepper to taste.
Spread the mixture evenly on the dough, leaving a 1-inch border around edges.
Roll the dough lengthwise into a log shape and place seam-side down on the tray. Tuck ends underneath.
Brush with oil or butter if desired, then sprinkle with the extra parmesan cheese.
Bake for 25–30 minutes until golden brown and cooked through.
Let cool slightly before slicing into portions and serve warm.
Notes
Wrap leftovers tightly and refrigerate up to 4 days, or freeze for later. Reheat in oven or toaster oven for best results.