Make incisions in the chicken "hasselback" style, about 1/2 inch apart, being careful not to cut all the way through the chicken.
Spoon about half of the tomato sauce into an even layer on the bottom of an 8x8-inch baking dish. Top with chicken. Spoon the remaining sauce on top of the chicken and in between the chicken slices. Sprinkle garlic powder, onion powder, Italian seasoning, and salt and pepper on top of chicken.
Bake chicken about 20-25 minutes or until nearly cooked through.
Sprinkle cheese on top of chicken and in between chicken slices. Top with mini pepperoni. Bake an additional 5-10 minutes or until chicken is cooked through and cheese is melted.
SNAPPY TIPS: You may need to change quantities of ingredients a little depending on the size of your chicken breasts and personal preferences. This recipe is naturally gluten-free and low-carb. For a dairy-free version, use a good cheese substitute. For a lower fat version, use a low fat pepperoni and cheese.SNAPPY SUBSTITUTIONS: Instead of pepperoni, you could use your favorite vegetables, bacon, or any of your favorite pizza toppings. Some toppings may not cook entirely so precook if desired.
Course: Main Dish
Keywords: family friendly gluten free chicken, low carb chicken dinner