Melt 1 tablespoon of the butter in a medium (10 to 11-inch) sauté pan over medium heat. Add the panko and cook for 2 minutes, stirring occasionally, until nicely browned. Transfer to a small bowl and stir in 2 tablespoons of the parsley, 1/4 teaspoon salt, and a pinch of black pepper and set aside.
Place the shrimp on a plate and pat them dry with paper towels. Sprinkle with 1/2 teaspoon salt and 1/4 teaspoon black pepper. Heat the remaining 2 tablespoons of butter and the olive oil in a large (11 to 12-inch) pot over medium heat. Add the onion and sauté for 4 minutes, until it begins to soften. Add the garlic and red pepper flakes and sauté for one minute. Add the shrimp in one layer and sauté for one minute on each side, until they start to turn pink but are not cooked through. Add the wine and simmer for 2 to 3 minutes to reduce the liquid. Stir in the arrabbiata sauce and heat until it simmers. Stir in the remaining 6 tablespoons of parsley with 1 teaspoon salt and 1/2 teaspoon black pepper and turn off the heat.
Meanwhile, fill a very large pot with water, add 2 tablespoons salt, and bring to a boil. Add the linguine and cook according to the directions on the package for al dente. Reserve a cup of the pasta water, drain the pasta, and add it to the sauce. Toss the pasta, sauce, and shrimp together with tongs or big spoons and allow it to simmer for one minute for the pasta to absorb the sauce, adding enough pasta water to make a nice sauce and coat the pasta. Transfer to a large, shallow serving bowl, sprinkle with the toasted panko, and serve hot.