MSG might be a bit controversial, especially concerning anti-Asian racism. Glutamine is an amino acid that naturally occurs in vegetables and MSG is a sodium glutamate salt (C₅H₈NO₄Na). It is perfectly fine for you unless you are allergic. You can find it in a lot of your favorite chips and cookies. I find that MSG on its own is really meh but a little bit of it in seasoning helps to tie everything together so hence why I am using it. But feel free to sub with salt or completely omit it.