Heat a large skillet over medium high heat and add oil. Add sausage and cook, breaking up with a wooden spoon until cooked through and crumbly.
Add in zucchini and sauté 2-3 minutes. Then add in orzo (option to add 2 cloves fresh minced garlic at this time too) and toast for 60 seconds. Pour in broth, bring to a boil, then reduce heat, cover, and simmer for 10-12 minutes, stirring every few minutes until orzo is cooked. Season to taste with salt and pepper.
Stir in parmesan until creamy. If you want to add spinach or arugula, toss in now.