They skipped some pretty important stuff that should have happened before the cooking competition: one that inspired what MC makes and one that helps him technique-wise. I really don't see how this is going to work, unless they stick in some flashbacks while he's cooking or something...

About the two untranslated bits of dialogue in ch8:

グレンほどでわないけど = not as many as Glen, though
俺の方がランク上なのに... = even though I'm a higher rank...