Make sure you cut the squash into 3/4-inch cubes as it's the ideal size. The salting of the squash is super important-don't skip any of it!
You can use chives instead of green onions, or you can leave them out. You can add other herbs if desired but keeping this frittata simple is one of its secrets.
If you don't eat meat, leave the bacon out. You can use hot peppers instead of sweet peppers.