Preheat the oven to 425 degrees. If using a baking stone, put that in the oven during preheating.
Heat a saute pan over medium heat with 2 Tbsp oil. Add 1/2 tsp. of the garlic and saute it till you can smell a nice roasted garlic smell. Add chicken slices to the pan and cook thoroughly (about 8 minutes). Set aside.
Melt the butter in a sauce pan on medium heat. Add the other 1/2 tsp. garlic and stir it around to cook for just a minute. Then add the flour. Allow that to cook for a little bit as well, just until you can smell that nice roasted garlic smell.
Add the cream and mix well. Change the heat setting to low and allow the sauce to cook till it thickens. This will take about five minutes.
Once the sauce is thicker, take off the heat and immediately add the Parmesan cheese and a little salt and pepper.
Roll the dough out onto a greased cookie sheet or preheated stone. Pinch the sides of the dough up if your sauce ended up being a little runny. Spread the sauce over the dough, then top with spinach, and tomatoes. Then place the chicken over the top.
Sprinkle mozzarella cheese over the top. Bake for 10-12 minutes or until the crust is a nice golden brown.