Start by heating the olive oil in a large pot over medium heat. Once hot, add the chicken sausage rounds. Sauté for about 5-7 minutes, or until they are browned and cooked through.
Add the chopped onion and minced garlic to the pot. Sauté for an additional 2-3 minutes, until the onion is translucent and the garlic is fragrant.
Stir in the uncooked orzo pasta and Italian seasoning. Mix everything well to coat the orzo with the flavors from the sausage and aromatics.
Pour in the chicken broth and tomato sauce. Bring the mixture to a gentle boil, then reduce the heat to a simmer. Cover the pot and let it cook for about 10-12 minutes, or until the orzo is tender.
Once the orzo is cooked, stir in the broccoli florets and chopped red bell pepper. Cook for an additional 3-5 minutes, allowing the vegetables to soften but still retain their color.
Taste your dish and season with salt and pepper as needed.
Ladle the Tomato Orzo with Chicken Sausage and Broccoli into bowls. Top with freshly grated parmesan cheese if desired.