Commentary:
I cook all the time with bell peppers - in eggs, sautéed with onions and stuffed into a pita, in soups - and they are always great with green chiles mixed in. But I don't make spaghetti squash that often. I happened to get a spaghetti squash, so I figured I'd combine some of my favorite flavors into a healthy vegetable dish. This one was a no-brainer - I knew it would be really good and it was. Plus it's really pretty. I'll make this over and over.
The addition of basil pesto and green chiles is where most of the flavor comes from - that's a no-fail combination. This is pretty basic, so feel free to experiment - add mushrooms, olives, whatever. Hope you enjoy it!