In a medium sized jar add (in the following order) diced onion, bacon, bell pepper and baby spinach. Put 2 whole eggs in and close the lid. Refrigerate until you are ready to eat (3-4 days). Remove the lid and the eggs and microwave (in the jar) for 90 seconds on high. Stir the ingredients (be careful the jar will be hot) and crack in your eggs. Add ½ the chives (reserve ½ for garnish) and season to taste. Whisk the eggs into the other ingredients and then microwave for a further 1-2 minutes (until cooked through). Add your remaining chives and serve.