Complex sentence: In large part because of Hari's efforts, Chick-fil-A announced in late 2013 it was removing dyes, artificial corn syrup, and TBHQ from their products along with announcing a plan to only use antibiotic free chickens within the next five years.
Split into simpler sentences: In large part because of Hari's efforts, Chick-fil-A announced in late 2013 it was removing dyes, artificial corn syrup, and TBHQ from their products. They also announced a plan to only use antibiotic-free chickens within the next five years.