Introduction: Social media has become a ubiquitous part of daily life. However, little is known about the influence of food-related social media content (FRSMC) on the eating habits of Malaysian undergraduates. This study explored FRSMC usage of undergraduates enrolled in a non-health program, its influence on eating habits, and how such social media content influences dietary behaviours. Method: This qualitative semi-structured interview study involved chemical engineering (CE) undergraduates at a university in Penang, Malaysia. The study was carried out from April 2021 to March 2022 during which ten participants were purposively selected. Based on precedent qualitative research sampling rule of thumb, this sample size of ten participants provided sufficient data saturation for an initial exploratory study. The interview sessions were recorded, transcribed, and thematically analyzed. Results: According to study findings, in terms of usage, food advertising and promotions; cooking tutorials and food and nutrition information are the most appealing types of FRSMC. With regards to eating habits, FRSMC can lead to healthy and unhealthy food choices. The study identified several perceived challenges, namely unrealistic and untrustworthy content, difficult and repetitive content, and algorithm-driven deviations from healthy diets. The effectiveness of FRSMC can be enhanced by creating trustworthy and engaging content. Conclusion: The study highlights that social media engagement can have both positive and negative impact on food choices among undergraduates. Some FRSMC are perceived to encourage and motivate undergraduates to adopt healthier dietary habits. Future research could involve a larger sample, representative of diverse socio-demographic groups in Malaysia.