Zisser won the Miss Earth New Zealand 2013 competition, an annual beauty pageant promoting environmental awareness. She was awarded the title after the original winner couldn't compete due to schedule complications.[6][7] Zisser was to represent New Zealand in the Miss Earth 2013 final on 7 December in the Philippines.[8] However, she was diagnosed with food poisoning a week before the final and withdrew from the competition.[9][10] Zisser continued to be involved in environmental programmes in New Zealand over her reigning year.[11][12]