Slice the hardboiled eggs in half lengthwise. Remove yolks and place them in a medium bowl. Add feta, olive oil, lemon zest, oregano, cayenne, capers, and black pepper. Mash thoroughly. If it seems a bit dry, add a little more olive oil until it reaches your desired consistency.
Taste and add kosher salt if needed. Depending on the saltiness of the feta and capers, you might not need to add any.
Fill the egg white halves and eat as is, if you want to skip the sautéing step. I like to top with a few additional whole capers when I serve them like this. And if you like a little more kick, sprinkle with a bit more cayenne.
And if you really want a treat...sauté them! Just level off the filling even with the surface of the egg. Then gently sauté cut side down in olive oil in a nonstick pan over medium heat. They're done when the flat edge is crusty golden brown.
These are great served atop a plate of spring greens drizzled with a light and zesty lemon vinaigrette. If they last long enough to make it to your salad, that is!
