What is it called when a 5 year old child eats only two things (tyson's chicken fries and campbell's chicken noodle soup)? she adamantly refuses to eat (or even sample) anything else. is this normal?

Power play: Kids at 5 are not at an age where reasoning works (tooth fairy, santa).Quit trying to reason with her. If you only offer healthy food & several tasty options, you have done your job. If she skips a few meals she may be willing to try things others seem to enjoy. Bribery is fine for trying new. As long as you fix the same fries/soup for every meal she will demand you continue.