In a large pot, add the chicken and cover with water, this can be a whole chicken, 3-4 breasts, or 3-4 quarters (separated), simmer until tender and cooked through, you are making a broth.
Remove from heat and set aside to let cool to room temperature (makes for juicer chicken). Remove the chicken to a cutting board. Strain the broth and return to the pot. Debone and chop the chicken.
Preheat your oven to 200 C (400 F) and get out a large baking dish, 9x13 should be perfect.
Add water as needed to the pot in order to boil your pasta. Bring the pot of broth to a boil, and cook your pasta until just tender, drain pasta and return pasta to the pot.
To the pasta, add the cheese, chopped tomatoes, chicken, soup, and season with salt, pepper, and onion powder to your liking, and mix together until the cheese is melted in. If the mixture is too thick, add some reserved tomato juice or water.
Pour mixture into your baking dish and bake for 15 minutes, done,
Serve, and of course, enjoy :)