01 - Heat the olive oil in a large, deep skillet or Dutch oven over medium heat. Add the sliced chicken sausage and sauté for 3–4 minutes until lightly browned. Remove and set aside.
02 - In the same pan, add the onion and red bell pepper. Sauté for 2–3 minutes until softened. Stir in the garlic and zucchini; cook for another 2 minutes.
03 - Add the orzo and toast, stirring, for 1 minute to enhance flavor.
04 - Pour in the chicken broth and add the grape tomatoes, oregano, basil, smoked paprika, and red pepper flakes if using. Season with salt and black pepper.
05 - Bring to a boil, then reduce heat to a simmer. Cover and cook for 8–10 minutes, stirring occasionally, until the orzo is tender and most of the liquid is absorbed.
06 - Return the browned chicken sausage to the pot and add the spinach. Stir until the spinach wilts and everything is heated through, about 2–3 minutes. Remove from heat and taste to adjust seasoning if needed.
07 - Serve hot, garnished with Parmesan and fresh herbs if desired.