Cook fusilli according to direction on the package. Then drain and run under cold water until cooled.
Place the cooled off pasta in a large mixing bowl and add in the diced pepperoni, diced green peppers, bacon bits and shredded cheese. Stir well.
Add in the mayo, pizza sauce, dehydrated minced onion, garlic powder, salt and pepper. Stir until all of the pasta is coated in the mayo and pizza sauce mixture.
Can be served immediately but it's best to refrigerate for a couple of hours to let the pasta absorb all the flavours.