Place the chicken in a stockpot and cover with water.
Add sazon to water.
Bring water to boil.
Once water is boiling, reduce heat to medium and cook for 15 minutes.
Remove chicken from water and set aside on cutting board or in a bowl.
Bring chicken stock back to a boil.
Put noodles in water and cook for 10 minutes.
Chop chicken into bite-sized chunks.
Chop Velveeta cheese into cubes.
Drain noodles, reserving chicken stock.
In a stockpot, mix together diced tomatoes, creamed soup, and Velveeta cheese.
Cook on medium heat, stirring so the cheese does not burn.
Once the cheese is melted, stir in chicken cubes.
Stir in noodles.
Stir together all ingredients and turn out into 9x13 baking dish.
Pour ½ cup chicken stock over top of noodle mixture.
Sprinkle top with 1 cup cheese.
Cover with foil.
Bake for 20 minutes at 350, then remove foil and cook for 10 more minutes. - or- Store in refrigerator or freezer.
If cooking from cold, cook for 30 minutes with foil on and then remove the foil and cook for 15 minutes.