McDonald's Corporation is scheduled to announce its third fiscal quarter earnings report on Oct. 21. The fast food giant's bad phase does not seem to end, as the company faced some major operational headwinds in the last couple of months. For the last two years, quick service restaurants such as McDonald's, Yum! Brands, Burger King and Dunkin’ Brands have been facing stiff competition from fast-casual restaurants in terms of customer traffic. Since the onset of this year, the industry has been witnessing commodity inflation at a higher rate.