Prepare pasta according to package directions. Fettuccine is traditional, but pretty much any kind of pasta will do.
Pour a bottle of alfredo sauce into a saucepan. Add frozen cooked shrimp and real bacon bits. (You can get both of these fairly cheap at Costco or Sam's Club). Cook until shrimp are heated through, stirring occasionally.
Pour sauce over drained pasta. Top with grated Parmesan cheese.
Takes about 15 minutes (depending on the pasta), serves 3 or 4, costs about $5-6.