Boil water for pasta and cook pasta according to package.
While pasta is cooking, cook sausages in a large skillet according to package directions.
When cooked, drain on paper towels and slice into coin shapes.
Add olive oil to renderings from sausage on medium heat.
Add all veggies and saute until tender, about 5-7 minutes.
Add sausage back in and mix well.
Mix drained pasta with sausage mixture and add Parmesan cheese if desired.