Preheat the oven to 400 degrees F. Spray or brush a little olive oil on a baking sheet.Take salmon fillet out of the fridge and pat dry with a paper towel.Arrange salmon skin side down on the prepared baking sheet.In a small mixing bowl combine softened butter, parsley, lemon zest and garlic with a pinch of salt and pepper. Mix until thoroughly combined.Spread the butter mixture evenly on top fo the salmon. Then bake in a 400 degree F oven for about 12-14 minutes until flaking.Remove from the oven and separate the salmon flesh from the skin. Set aside until it's time to mix into the pasta.
While the salmon is baking fill a large pot with water and bring to a boil. Add pasta and cook to just before al dente or about 1-2 minutes less than package instructions. Add in the frozen peas and boil for another 1-2 minutes until pasta is tender and peas are warmed through. Reserve about a cup of the pasta water and then drain pasta and peas into a colander. Pour the drained pasta and peas back into the warm pot and place on the warm (but still turned off) burner. Add in creme fraiche, lemon zest and juice, chives, butter and a generous pinch of salt and pepper. Mix to combine, adding a splash of pasta water to bring the sauce together. Add the salmon flesh (no skins) to the pasta and mix to combine. Taste and add additional salt, pepper and lemon juice according to preference. Enjoy!