Between two pieces of parchment paper, roll dough into a large circle on a pizza pan.
Remove top parchment and prick dough all over with a fork (to keep dough from bubbling).
Bake in preheated oven for 10 minutes.
For Sauce
Mix 1 Tablespoon of hot sauce with ¼ cup ranch dressing.
Spread over pizza crust.
For Chicken
Mix 2 cups chicken with 2 Tablespoons of hot sauce.
Assemble Pizza
Sprinkle ½ cup mozzarella cheese over sauce.
Spread chicken over pizza, and top with remaining mozzarella, celery, and sprinkle with oregano.
Bake for 10 more minutes.
Notes
This pizza is very mild. If you want it spicier, feel free to use more hot sauce. (I used the Chalula brand, which is very mild. A different hot sauce may yield a different heat.)