Cook the pasta according to package instructions until al dente, then drain.
In a large bowl, mix the cooked pasta, vegetables, marinara sauce, garlic powder, Italian seasoning, salt, and pepper.
Grease a baking dish with olive oil and pour the pasta mixture into it. Top with shredded cheese.
Bake in the oven for 20 minutes, or until the cheese is bubbly and golden.
Serve
Dig in straight from the baking dish for a cozy, cheesy feast!