Cook your pasta to the package instructions
Dice your chicken breast into bite size pieces, season your pieces with your favorite seasoning liberally. I chose kosher salt, black pepper and Crop Dust all purpose seasoning from my local butchers shop The Flying Butcher.
In a saute pan add the olive oil and when hot add the chicken, sprinkle on the 2 packets of sazon. If you want the pieces browned do no over crowd the pan and cook in batches. Set aside.
In the same saute pan add the butter and flour making a roux. cook the flour for about a minute. Whisk in all the milk and keep whisking until the sauce thickens. Lower the heat and add the mascarpone cheese stir till all combined. Remove from the heat and add the cheddar and half of the mozzarella cheese stir till melted.
In a large bowl add the cheese sauce and the cooked chicken to the pasta. Stir till combined. Depending if you are saving for later or having now. Add to your baking dish and sprinkle with the remaining mozzarella cheese. Bake for 20 minutes or until the top is browned and heated through.