Cook your pasta of choice according to the package instructions (cook it on the more al dente/firm side, as it will continue to cook in the juices of the veggies while in the oven).
While your pasta is cooking, was and chop your veggies and sausage into bite size pieces.
Once your pasta is done, turn off the heat, drain the pasta, and return it to the pot.
Add the jar of pasta sauce, veggies, and chicken sausage to the pasta and stir until everything is evenly coated in the sauce.
Place the pasta mixture into a casserole or baking dish. Grate some fresh mozzarella cheese over top.
Bake at 350 degrees for 25-30 minutes, or until the cheese on top begins to turn golden. Remove from the oven, allow to cool, and serve. Enjoy!