Step 1: Crack eggs into a bowl, add salt, black pepper, and milk if using, then whisk until combined.

Step 2: Heat olive oil or butter in a non-stick skillet over medium heat.

Step 3: Add spinach and sauté for 1 to 2 minutes until wilted.

Step 4: Pour in the egg mixture and cook gently, stirring until softly scrambled.

Step 5: Remove from heat and fold in crumbled feta cheese and chili flakes if using.

Step 6: Warm the tortillas in a dry pan or microwave.

Step 7: Divide the egg mixture between tortillas, roll tightly, and serve warm.