In a bowl, add the active dry yeast to warm water. Let it stand for 5 minutes to activate and become foamy.
Stir in the sugar, salt, and oil into the yeast-water mixture.
Gradually add 2-3 cups of all-purpose flour to the wet ingredients, mixing until a smooth and elastic dough forms. Adjust the amount of flour as needed to achieve the right consistency.
Cover the dough and let it rise for 20 minutes in a warm, draft-free place until it doubles in size.
While the dough is rising, prepare the pizza filling by combining the shredded cheese, chopped pepperoni, and pizza sauce in a bowl. Mix until well combined.
Once the dough has risen, roll it out on a lightly floured surface to about ⅛ inch thickness.
Using a pizza cutter, cut the rolled-out dough into rectangles measuring approximately 2x4 inches.
Spoon about a tablespoon of the pizza filling onto each rectangle, then fold over the dough to form a pocket, enclosing the filling.
Pinch the edges of the pockets together to seal them.
Heat oil in a frying pan to 350°F (175°C).
Fry the pizza rolls in the hot oil for about 2 minutes on each side or until they turn golden brown and crispy.
Remove the fried pizza rolls from the oil and place them on a paper towel-lined plate to absorb any excess oil.
Serve the pizza rolls while they are warm and enjoy!