Add the cut Italian sausage and cook the coins until deeply golden on both sides. Remove from the pan.
Add the diced onion and cook for 2–3 minutes until softened. Stir in the garlic, Italian seasoning, and chopped sun-dried tomatoes and cook for another minute until fragrant.
Add the dry orzo and stir well so it gets coated in all that flavor for about 1 minute.
Pour in the chicken broth. Stir well, bring to a gentle simmer, and cook uncovered, stirring often, until the orzo is tender and the sauce has thickened, about 8–10 minutes.
If the orzo starts looking too thick before it finishes cooking, add a splash more broth as needed.
Return the cooked sausage to the pan. Fold in the spinach, cooking until it wilts. Stir in heavy cream and parmesan cheese.
Remove from heat and stir in the juice of ½ lemon.
Taste and adjust salt and black pepper as needed. Serve hot with extra parmesan, black pepper, and a little extra lemon or zest if you want it extra bright.
Notes
Keep a little extra broth nearby — orzo absorbs quickly, and a splash at the end keeps everything creamy instead of tight.