Sheet Pan Sausage and Vegetables

precooked sausage or kielbasa (pork, turkey, or beef sausage or kielbasa; I used beef polska kielbasa), sliced into 1/2-inch rounds

medium/large yellow bell pepper, diced into bite sized pieces (red, orange, or green pepper may be substituted)

medium/large zucchini, trimmed and sliced into bite sized pieces

to 1 cup cherry or grape tomatoes

about 2 to 3 tablespoons olive oil

dried onion flakes

tablespoon smoked paprika (regular paprika may be substituted)

dried parsley

dried oregano

kosher salt, or to taste

freshly grated black pepper, or to taste

freshly grated Parmesan cheese, optional for garnishing