Prepare your broccoli rabe. Rinse the leafs and pat dry. Cut off most of the stems (the thickest parts). Pull off some skin of the stems, using a peeler. Peel until you hit the leaves. Set aside
Place a large skillet over medium heat and add in the olive oil. Slice the sausage into 1/2 inch chunks (or remove from caseing and crumble - whatever you prefer) and place into skillet along with the garlic and season with salt, pepper, and a pinch of oregano. Cook for about 3 minutes, flipping over to cook both sides.
Push the sausage to the side and add the broccoli rabe and red pepper flakes to the skillet. Stir and cook for about 1 minute and then add in the chicken broth, mixing the sausage and broccoli rabe together. Cook until reduced and broccoli rabe is mostly wilted. Then, add in zucchini noodles. Cook for about 2 minutes or until noodles begin to soften.Stir in Pecorino Romano cheese and lemon juice (optional) and combine thoroughly.
Plate onto dishes and enjoy!