Scott should apply for a higher post and he should work on it. He must join some cookery classes so as to learn more and be eligible for the upper post.
Practice makes a man perfect and he must practice more and more in order to perform really well.
He can even join some other hotel so that he can reach to a post of executive chef. He should apply for some higher courses in hotel management or something like this in order to get promoted.
The overload principle is the most basic of all physical activity principles. It says that doing "more than normal" is necessary if benefits are to occur.