Feta, Egg & Spinach Breakfast Taco

Heat oil in a small nonstick skillet over medium heat. Cook tortilla, flipping once, until softened, about 1 minute total; transfer to a plate. Add spinach to the pan; cook, stirring, until just barely wilted, about 1 minute. Transfer to the tortilla. Sprinkle feta in an egg-sized circle in the pan, leaving an open spot in the center. Break egg into the feta. Cover and cook until the egg is done to your liking, about 2 minutes for over easy. Transfer to the spinach and drizzle with hot sauce, if desired.