The "cayenne" was cinnamon, but my wife liked it. She liked the potatoes with skin. I used a whole can of tuna for the half-recipe but it didn't seem like too much. However, the smell of tuna was quite strong.
We ate half for supper that night and the other half for lunch yesterday. The full recipe does serve 6-8.
Now that I'm a frittata "expert", what shall I try next?