In a large mixing bowl, whisk together the eggs and heavy cream until smooth.
Stir in the shredded cheddar cheese, chopped spinach, and chopped bacon. Season with salt and pepper to taste.
Grease the cups of an instant pot silicone egg bite mold with cooking spray.
Divide the egg mixture evenly among the cups of the egg bite mold.
Pour 1 cup of water into the instant pot, and place the egg bite mold on top of the trivet.
Lock the lid in place, and set the instant pot to cook on high pressure for 8 minutes.
After 8 minutes, allow the pressure to release naturally for 5 minutes, then manually release any remaining pressure.
Carefully remove the egg bite mold from the instant pot, and let it cool for a few minutes.
Gently pop the egg bites out of the mold and serve immediately, or store in the refrigerator for up to 4 days.