Taste and adjust the seasoning to your liking. Serve hot!
Meanwhile heat the olive oil in a large sauté pan, add the shallots and garlic and sauté until they told golden.
Add the red pepper flakes, wine, a pinch of kosher salt, clams, and 2 tablespoon if parsley to the pan. Cover and bring to a simmer until the clams open for about 8 minutes Throw away any unopened clams.
Drain the pasta and reserve 1/2 cup of pasta water. Add the pasta to the saute pan with the clams. Add the pasta water and cook in medium heat for 2 minutes. Remove the pan from the heat. Add lemon juice, lemon zest, butter, parsley and toss.
Taste and adjust the seasoning to your liking. Serve hot!