New Zealand is currently facing an obesity and non communicable diseases (NCDs) epidemic. Recent studies have largely attributed these health issues to insufficient food and low-quality diets that cause micronutrient deficiencies. Improving healthy diets requires broader thinking and collaboration, particularly around maintaining sustainable food systems, which signifies a shift from individualistic/behavioural approaches in health promotion. This paper aims to extend solutions addressing increasing rates of obesity and diet-related NCDs in New Zealand while considering diet and human health in concurrence with sustainability. In particular, the three pillars of sustainability—economic, environmental, and social—will be considered, alongside application of a food systems approach to analysing the epidemic and policy developments in New Zealand. Given its proximity to smaller Pacific islands in the region, New Zealand is in a unique position to work multisectorally and be a leader in considering food system approaches to tackling obesity and NCDs in the Pacific.