Added chicken and mushrooms and the taste was great. However, it was a very dry dish. Maybe keep a bit of the pasta water or mushroom juices next time? We might also try sauteing all the veggies together before adding to the spaghetti. Was good (not great for a first try) but will make a second attempt to see how we can improve.
We also add about a half tablespoon of pepper flakes and it added just a pinch of flair.