Preheat oven to 425F. Line a baking sheet with parchment paper.
On a lightly floured surface, roll out pizza crust to about 12x10-inches. Spread ranch dressing evenly over the crust. Sprinkle with pepperoni, shredded Colby Jack, and green onions. Working with the long side, roll up tightly.
Slice into 1-inch slices and transfer to prepared baking sheet. Bake 12 - 14 minutes or until browned. Serve with pizza sauce for dipping.