Step 1: Preheat your oven to 350°F (175°C) to ensure even baking.
Step 2: Grease a muffin tin with cooking spray or line with muffin liners.
Step 3: In a mixing bowl, crack the 6 eggs and whisk until fully blended.
Step 4: Add 1 cup of sour cream and ½ cup of half-and-half to the whisked eggs.
Step 5: Stir in the chives, parmesan, Italian seasoning, and salt until well combined.
Step 6: Pour the egg mixture evenly into the prepared muffin tin, filling each cup about two-thirds full.
Step 7: Bake for 20-25 minutes, until edges are golden and centers are set.
Step 8: Cool in the tin for a few minutes before transferring to a wire rack. Serve warm or at room temperature.