In a small bowl, combine warm water, sugar, and yeast. Let sit for 5 minutes until foamy.
In the stand mixer bowl, add flour and salt.
Add the yeast mixture and olive oil. Mix on medium speed with the dough hook for 5–7 minutes until a soft, slightly sticky dough forms.
If needed, add more flour 1 tbsp at a time.
Transfer to a greased bowl, cover, and let rise for 1–1.5 hours until doubled in size.
Preheat oven to 450°F (230°C).
Lightly oil two 13x9-inch nonstick sheet pans and dust with cornmeal (optional).
Divide the dough in half. Stretch each portion to fill the pan, pressing to the edges. Let rest for 10–15 mins if dough resists stretching.
Spread a thin layer of pizza sauce over the dough.
Sprinkle a mix of cheddar and mozzarella cheese.
Top with cooked chicken, onions, and bell pepper slices.
Add more cheese over the top.
Bake for 20–25 minutes or until the crust is golden and cheese is bubbly.
Drizzle with chili oil after baking. Cool for 5 minutes, then slice and serve.