Preheat your oven to 400F and prepare a baking tray with parchment paper.
Cut your chicken breast into bite-sized pieces and season with salt and pepper to your liking!
Place each chicken breast bite onto the baking tray and add a small spoon of pizza sauce on top of each piece.
Next, top the chicken with mozzarella cheese and 1 pepperoni per piece of chicken.
Bake at 400F for 20-25 minutes or until the pepperoni is crispy and the chicken has an internal temperature of 165F.
Serve and enjoy!