Bring a large pot of lightly salted water to a boil. Add spaghetti and cook until al dente, about 5 minutes. Drain and set aside.
While the pasta is getting started slice sausages lengthwise and remove the casings. Brown sausages in a large frypan over medium-high heat with a drizzle of the olive oil. Remove sausages to a platter and keep warm in the oven.
Add the capsicums, garlic, oregano and basil to the frypan and drizzle with the remaining olive oil. Saute over medium heat until capsicums are tender.
Toss the capsicum mixture with the drained spaghetti until well blended and season with salt and pepper to taste. Transfer to a serving platter and arrange the sausages on the top. Garnish with Italian parsley and Parmesan cheese.