Remove the casings from each sausage link, then pinch about 1 teaspoon sausage with your fingers and roll it into a mini meatball. Repeat with remaining sausage. (Each link should yield 10 to 13 meatballs.) Brown the meatballs in a large cast-iron, enameled cast-iron or nonstick skillet over medium heat, until nicely browned all over, about 6 minutes total.
Add the chicken stock to the pan along with the orzo. Cover and simmer on medium heat for 5 minutes. Lift the lid and give it a stir, making sure no pasta is sticking to the pan. Add the kale, nestle it in, then cover and simmer another 2 minutes. Lift the lid and add the juice from half the lemon (cut the remaining half into wedges). Stir and simmer until the orzo is just al dente, an additional minute or so. Season to taste with a pinch of salt if needed.
Divide among shallow bowls and garnish with plenty of grated Parmesan, along with extra lemon wedges and parsley. And crusty bread. Always.