Preheat the oven to 375 degrees and grease and flour 4 ramekins or eight muffin cups.
In a large bowl, whisk together the eggs, bacon, salt and pepper, then divide the mixture evenly among the ramekins. Sprinkle the top of each with chives.
Bake for 20 to 30 minutes, until eggs are set. Keep checking on them in the oven. When the eggs puff up, that’s the sign that they’re almost done. They taste best when served immediately, but they can also be refrigerated for up to a week.