Pour the whole box of pasta into a large skillet, at least 12 inches in diameter.
Add cold water and chicken broth.
Turn the heat to high and set the timer for 10 minutes.
After most of the water has been absorbed (about nine minutes) add cream of chicken soup, cream of celery soup, shredded chicken, corn and peas, milk, cream cheese, garlic salt, and onion powder.
Turn heat down, cook and stir for a few minutes until everything is combined and heated through.
Remove from heat and stir in shredded cheddar cheese.