Meanwhile, cook pasta according to package directions reserving 1 cup pasta cooking liquid.
Place sausages on the grill and rotate every 3 minutes or so until fully cooked (about 8 minutes.)
Lightly brush onions and peppers with half the olive oil and salt/pepper to taste. Grill for 3-4 minutes per side then remove from grill.
While sausage and onions are cooking, heat remaining olive oil in a large sauce pan and saute garlic and red chili flakes for 30-60 seconds. (Careful not to burn garlic.) Add fire roasted tomatoes and simmer for 5-8 minutes.
When sausages and veggies come off the grill, cut into bite sized pieces then stir into tomato sauce before adding the cooked pasta to the pan. Toss well and check for seasoning. Add additional salt and pepper to taste if needed. Use reserved pasta cooking liquid to add moisture if needed as well.
Garnish with fresh basil, parsley and cheese to serve if you wish.
Excellent source of Vitamin C, good source of Vitamin A, Iron and Calcium