Gather and prep all of your ingredients. If your spinach is frozen, thaw it and squeeze out any excess water.

Lightly scramble the eggs in a bowl.

Add the olive oil and squeezed spinach to a ramekin or oven-safe cup. Season with salt and pepper. Pour the scrambled egg over the spinach and lightly stir to combine.

Top the egg cup generously with crumbled feta cheese.

Place the ramekin/cup into your air fryer basket and cook at 400°F (200°C) for 7-9 minutes, or until the eggs are set to your preference.

Let cool for a minute or two before serving. Enjoy your healthy and delicious breakfast!