Preheat the oven to 375 degrees F.
Chop spinach and place in a non-stick pan over medium heat. Stir until wilted. Add cream cheese and stir until melted and creamy. Cool completely.
Butterfly chicken breast (so you can open it like a book) and pound to 1/2" thickness.
Divide the spinach mixture over each breast and top with one slice of swiss cheese. Close chicken around the spinach and cheese. Wrap each breast with 2 slices of bacon and secure with toothpicks. Season with cajun or chicken seasoning if desired.
Bake on a pan for 35-40 minutes.
(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)