For the ones that you're eating relatively soon, I think it's OK to skip blanching It's certainly easier to rinse, drain, string and put in a freezer bag. And they will taste fresher later in the week or next week than if you refrigerated them. With the sweet garden peas, my kids like to eat them frozen right out of the freezer, and my kitties don't complain when I give them frozen string beans.
For the ones that you're going to be digging out of the freezer after gardening season is done, it's definitely better to blanch first (I didn't know about peppers though). Freezing doesn't stop the enzyme activity which is stopped by the heat in blanching, so unblanched peas and beans lose their fresh color and flavor, and they seem more prone to random freezer burn.