Place the chicken breast in a pot of salted water, cover, and bring to a boil.
Lower the heat, keep it covered, and simmer until the chicken is cooked. Remove and discard the foam that floats to the surface.
Using a separate pot, cook the macaroni according to its package instructions; drain and set aside.
Once the chicken is ready, remove it from the pan and let it cool.
Chop all the vegetables and pineapple into small cubes, keeping them almost the same size.
Place the chopped celery, carrot, pineapple, and raisins in a big mixing bowl.
Tear (or chop) the cooled chicken into similar-sized pieces and add it to the bowl, with the drained macaroni.
Add the mayonnaise, salt, pepper, and approximately four tablespoons of the pineapple liquid from the can, and combine evenly.
Chop the cheese and combine it with the remaining ingredients.
Mix, taste, and adjust the taste of your chicken macaroni salad to your preferred taste.
You can add more mayonnaise, more pineapple juice, or salt and pepper; even more raisins if you want it sweeter --- it's all up to you.
Cover with plastic, or transfer to a container with a cover and let chill in the refrigerator for at least an hour.
Serve your Filipino chicken macaroni salad and enjoy!