Step 1

Preheat oven to 400° F.

Step 2

Grease a 9 X 13 casserole dish.

Step 3

Cut chicken into bite-sized pieces and place them in a bowl. Add the spices and mix well to coat the chicken.

Step 4

Add 3 TB butter and 1 TB olive oil a large skillet over medium-high heat. (I used a 12-inch skillet.)

Step 5

Once the skillet is hot, add the chicken in a single layer and brown both sides nicely. (The chicken will turn easily once it has fully browned.)

Step 6

Using a slotted spoon, scoop out the chicken spreading it evenly onto the bottom of your greased casserole dish.

Step 7

Top with 20 oz spaghetti sauce (approx ¾ of a 24 oz jar) and spread it out evenly.

Step 8

Top with 2 ½ cups of mozzarella cheese and ¼ cup Parmesan cheese.

Step 9

Add pepperoni, green peppers, mushrooms, and onions to the top.

Step 10

Bake for 15 minutes then move to the top shelf of the oven and broil for 2 minutes or until the mozzarella cheese begins to bubble and turn brown.

Step 11

Let sit for 5 - 10 minutes before serving. The spaghetti sauce will be a bit thin when you first take it out of the oven but will thicken up if you let it sit for a few minutes.