Bring a large 1-gallon pot of water to a boil, add 2 tablespoons of the salt to the pot and place the pasta in it. Cook, stirring occasionally, until al dente, about 10 minutes. Drain and then transfer pasta to a large bowl and drizzle with 1 tablespoon of the olive oil. Toss to coat the pasta well, then set aside.
As the pasta cooks, set a 14-inch saute pan over medium-high heat and add the remaining olive oil. Once hot add the red jalapenos. Season the shrimp with 2 teaspoons of the Essence, add the shrimp to the pan and cook for 1 minute. Turn the shrimp over and cook another minute. Remove the shrimp from the pan and set aside as you prepare the sauce.
Place the onions in the pan and cook until wilted, about 3 to 4 minutes. Add the garlic and saute until fragrant, about 30 seconds. Add the red pepper flakes and saute briefly before adding the tomato sauce and tomato paste. Cook the sauce briefly, then add the clams to the pan. Cover the pan and cook the clams for 1 minute, remove the lid, add the mussels to the pan and replace the cover. Cook the mussels for 2 minutes, remove the lid and season the calamari with the remaining 1 teaspoon of Essence before adding them to the pan along with the seared shrimp and the pasta. Continue to cook the pasta, tossing to blend the pasta with the sauce, and season with the remaining 1 1/4 teaspoons of the salt, about 2 minutes. Garnish the pasta with the chopped parsley and cheese and serve.
Emeril's ESSENCE Creole Seasoning (also referred to as Bayou Blast):
Combine all ingredients thoroughly.
Recipe from "New New Orleans Cooking", by Emeril Lagasse and Jessie Tirsch, Published by William Morrow, 1993.