A significant number of elementary school students experience challenges related to lunch, including forgetting lunch money, lacking awareness of their individual dietary needs, and the importance of balanced nutritional choices for their overall health. Numerous parents and guardians struggle to monitor their children at school, control their purchasing behaviors, and maintain their health. Therefore, this research aims to enhance the efficiency and monitoring of elementary school students' lunch choices. LunchByte, a face recognition system developed in this study assists elementary in monitoring lunch expenses concerning their dietary restrictions. The main feature of LunchByte is using a student’s face print to generate a custom menu tailored to their allergies/diet restrictions and allowing them to pay with a prepaid balance added by their guardians. The evaluation of this system involves conducting model testing to assess the accuracy of facial recognition, integration testing to examine the interaction between different components of the system, and usability testing with end-users to evaluate the user experience. The results of these tests indicate that the system achieves high levels of accuracy and user satisfaction. The study is important because it has the potential to improve the overall health of young children.