Prep the Oven and Bacon:

• Preheat the oven to 400°F and place racks in the upper and lower thirds.
• Bake the bacon until crispy, then chop into small pieces. Spray 18 muffin cups across two standard muffin tins with nonstick spray.

Make the Filling:

• In a microwave-safe bowl, soften the cream cheese in 10-second intervals until melted.
• Mix in one egg, garlic powder, black pepper, and oregano until smooth.
• In another bowl, combine spinach, feta, Parmesan, and bacon bits. Add this mixture to the cream cheese mixture and adjust seasoning to taste.

Prepare the Puff Pastry:

• Roll out one sheet of puff pastry on a floured surface, smoothing out any creases, and cut into nine squares.
• Place each square into a muffin cup, pressing the center down and leaving the corners hanging over the edge.

Assemble and Bake:

• Spoon the spinach filling into each pastry cup.
• Fold the pastry corners over the filling and lightly press the center.
• Beat the remaining egg and brush it over the tops of the pastry.
• Bake for 21-24 minutes, rotating the pans halfway through, until the puffs are golden and crispy. Cool in the pans for 10 minutes before transferring to a wire rack.