I found this recipe for spicy sweet potato fries a long time ago. I've been interested in trying it for a while, but either didn't have sweet potatoes to use or was discouraged by my family, who thought the spicy part sounded weird. Well, I proved them wrong. I made them last week and they were delicous. Even the skins, which my family was also worried about, tasted fine. They weren't very spicy - I'll probably add more red peppers next time - and I left out the fennel seeds because we didn't have any.
I highly recommend you try them. Recipe here.
You can find the recipe for the feta green beans here.