Place three pieces of pepperoni diagonally on top of an egg roll wrapper (as shown in the picture). Place a piece of string cheese on top. Fold corners over cheese. Fold bottom corner over cheese and pepperoni and keep rolling until cheese is tightly sealed. Moisten corners with water to seal. Repeat with the rest of wrappers, cheese and pepperoni.
In a skillet, heat oil to 350 degrees F. Fry sticks, a few at a time, for 45-60 seconds on each side until completely brown. Drain on paper towels.