Except for the Swiss Chard (2 CHO/100GR) and the white wine (1.5 CHO), the pasta is the only real Carbs in this recipe.
If you like Swiss Chard add more, rainbow is a little more colorful, but the taste once cooked is the same as the regular green.
We always cook GF and regular pasta and finish the dish as per the recipe but in 2 different saucepans, halving ingredients. So instead of placing all the pasta back in the Dutch Oven, simply add half the clam juices and Chard stems to the drained GF pasta pot and finish as above.