Grease a pie pan, cover it with your dough, poke holes in the bottom, line the dough with aluminum foil and weights, and pre-bake in your oven for about 15 minutes.
While the crust is baking, heat the olive oil in a deep skillet over medium heat.
Add the red pepper, and saute until softening, about 3 - 5 minutes.
Increase the heat to high and add the spinach, moving it around a lot so it doesn't overcook, when some leaves begin wilting, remove from heat.
Crumble feta cheese over the base of your pre-cooked crust.
Lightly squeeze the liquid from the spinach/peppers and spoon over the feta.
Crack the eggs into a medium bowl, generously salt and pepper, and whisk until smooth.
Add the sour cream and whisk until blended and creamy, about 2 minutes.
Pour the egg mixture over the spinach, return to oven and bake for about 25 minutes, or until set.