Cook the pasta in boiling salted water until al dente.
Drain, reserving some of the pasta liquid, and set asid.
Add the chopped bacon to a skillet at a medium-high setting. Cook, stirring occasionally, for 3 to 5 minutes, until it begins to brown.
Add the green onion and garlic. Continue to saute for another 3 to 50 minutes, until softened.
Add the flour, and stir to coat. Add a little butter to the pan if the mixture is too dry.
Continue to stir as you add the mix and lemon juice. Cook and stir for 3 to 5 minutes, until the sauce thickens.
Add the goat cheese, and stir until melted.
Season with salt and pepper.
Add the cooked pasta to the sauce and stir. If you need to thin it, use the reserved pasta liquid.
Add the lemon zest, and garnish with parsley.