Boil a large pot of salted water and cook the pasta according to package instructions. Drain and set aside.
Heat a large skillet over medium-high heat. Add a little oil to the skillet and saute the sausage until crispy on the outside, flip once. Then add the garlic and onions, and saute onother 2-3 minutes. Stir regularly.
Add the red pepper, pasta and capers. Toss and taste for salt and pepper. Add a little of the pepper jar oils if the pasta seems dry. Serve warm.