I like to replace traditional pasta with quinoa, brown rice, beans (garbanzo, black, any!), and spaghetti squash. My tips are to watch the servings with quinoa, it looks like extremely small beads and always makes me want to add more than an appropriate serving. I also prefer to boil my spaghetti squash when I cook it even though it loses a little nutritional value. I prefer boiling because I can season the water and give the squash a bit more flavor.
Some questions to your question:)
-Have you tried whole wheat pasta? (considered better than the white version).
-How much pasta do you eat? I don’t think it’s a big deal to have regular pasta occasionally.
-How ’bout trying: risotto, brown rice, sweet potato, lentils, barley, etc…
Also, like others have mentioned, it’s really good to round out a pasta meal with some protein (chicken, fish, bit of cheese, maybe), a good tomato sauce, and a hearty dose of veggies, and you’re all set!