Rotini pasta, which is usually made from wheat, isn't keto-friendly because it has a lot of carbs. If you're on a keto diet, you can try low-carb pasta alternatives like shirataki noodles, zucchini noodles, and spaghetti squash. For a pasta-like experience without the carbs, you might want to check out a Keto shop.Personally, I find shirataki noodles a good substitute for rotini on a keto diet. They're made from the konjac plant and have very few carbs and calories. You can use them with different sauces and toppings to make a tasty meal.