2) Add the prawns, seafood seasoning and 1 sliced lemon to a medium bowl and toss to coat. Reserve.
3) Over low heat, melt the butter in a small pot, then stir in the garlic and red pepper flakes. Let cook and bubble gently for 10 minutes. Chop the parsley and set aside.
4) Heat the olive oil in a large skillet over medium-high heat, then add the fennel seeds and the prawns with the lemon slices. Cook until the prawns are pink, about 5 to 6 minutes. Stir in the white wine or vermouth and the juice of one lemon. Transfer to a serving bowl and garnish with parsley before serving.
5) Drain the pasta. Add the pasta, reserved cooking water and butter to a pasta bowl and toss until the liquids are absorbed by the pasta, about 1 to 2 minutes. Season with salt and pepper, to taste, and serve.