On medium heat add olive oil to skillet, poke holes in sausage links and add to skillet. Turn over occasionally, when half cooked remove sausage from skillet and cut up in bit size pieces, and back to skillet to fully cook. Turning occasionally so not to burn. Add onions and bell peppers to skillet and seasonings to taste. When fully cooked stir in diced tomatoes. Add to pasta and mix well. Ready to serve.