Preheat an oven to 400ºF and bring a pot of salted water to a boil for the pasta.
Cook the pasta for 8-9 minutes until tender. Reserve 1 cup of pasta water before draining the pasta. Set aside.
Set the burner to its lowest setting and add the drained pasta back to the pot with the cup of pasta water and milk. Stir to fully incorporate.
Gradually fold in 8 oz of shredded cheese 1-2 oz at a time until you have a smooth sauce. (Don't worry if the sauce is slightly runny, it will thicken in the oven once the chicken is added.) Salt and pepper to taste.
Transfer the mac and cheese to a baking dish or oven safe skillet and stir in the pulled chicken. Top with 2 oz of shredded cheese and drizzle with BBQ sauce (optional). Bake for 8-10 minutes until the cheese is melted and bubbly.
Notes
*We used our slow cooker BBQ chicken recipe. See post above for more recipes/ideas for using other chicken.
Nutrition Facts Notes
Each serving has 10 WW SmartPoints (blue).
To reduce the fat/calorie content, you can reduce the milk to 1/2 C and cheese to 4-6 oz in the pasta. You can also top with 1 oz instead of 2 oz. And the slow cooker chicken we used is with chicken thighs. Using chicken breast will reduce the fat/calories as well.