Preheat oven to 375 degrees Fahrenheit.. Line a baking sheet with parchment paper and set aside.
Unroll the crescent rolls and separate so that there are 8 triangles of dough.
Sprinkle ¼ teaspoon of Italian seasoning entirely over one side of each dough triangle. At the widest part of the triangle, add 3 slices of pepperoni over top the seasoning (overlapping so that they fit within the dough's edges). Place 1 cube of cheese in the center of the pepperoni.
Starting at the widest end of the dough, tightly roll up the crescents and seal all the edges to prevent cheese from escaping while baking.
Place crescents on the prepared baking sheet and brush tops with melted butter.
Bake 6-8 minutes or until golden brown. Brush tops again with the remaining melted butter.
Warm up the pizza sauce in the microwave or on the stovetop. Serve crescents with the hot pizza sauce for dipping.