Heat a large 4 quart or larger pan with 2 tablespoons of olive oil.
Add 1/2 tsp of sea salt and 1/4 tsp of black pepper to the chicken and add the chicken to the hot pan. Brown on all sides. Once it is cooked, add the chicken to a plate and set aside. You will add it back into the pan later on.
Cook the Pasta
heat 2 tbsp olive oil in the pan and add the garlic
Once the garlic starts to brown, add in your 2 cups of milk and 3.5 cups of broth.
Add the pasta, sprinkle in some sea salt(about 3 pinches) and a good shake of black pepper.
Give the pasta a good stir. Then, bring the pasta up to a boil, and then once it boils, turn the heat down to low and cover the pot.
Simmer for 15 minutes. I gave it a quick stir every 5 minutes just to make sure it was not sticking, and to rotate the pasta so it evenly cooks.
Once pasta is al dente, turn off heat, add in the 1/2 cup of half and half, the chicken, and the cheese. Give it a good stir. If mixture seems liquidy, it is ok as the sauce will thicken up as it cools slightly.