Complex sentence: He mentioned that he had shaved his head bald to demonstrate how badly he originally wanted to work for Chef Ramsay, and he called upon volunteers to have their heads shaved to show how badly they wanted to work for him.
Split into simpler sentences: He mentioned that he had shaved his head bald to demonstrate how badly he originally wanted to work for Chef Ramsay. He then called upon volunteers to have their heads shaved to show how badly they wanted to work for him.