Preheat oven to 400 degrees.
Cook bacon on a broiler sheet for about 10 minutes. Remove from the sheet pan and cool on paper towels.
Spray cooking spray in the muffin tins.
Place one piece of bacon in each hole, wrapping it around the sides of each opening.
Crack an egg in each hole.
Top with the chopped chives.
Cook for about 12-15 minutes or until the bacon is crisp. Remove and allow to cool for 5 minutes. Remove the baked egg cups from the muffin pan using a fork.