Bring about 4 quarts of water to a boil and drop in the bag of Zatarin's. Low boil for 10 minutes to spread the flavor into your water. Add the cleaned shrimp and cook until pink which is about 2 minutes. Use large slotted spoon to remove shrimp. Return the water mixture to a boil and add the pasta shells you choose and cook el dente. Follow cooking times on package. Discard the seasoning bag and drain the pasta; add a couple tablespoons of olive oil to the pasta so it doesn't stick together. Add rest of ingredients to pasta then add the cooled shrimp either whole or cut into large pieces. Season with salt and pepper to your taste and refrigerate until cool. Can be refrigerated overnight before serving.