The research aims to explore the potential relationship between chameleon leadership and marketing ambidexterity in the context of fast-food restaurants. The study also tests the mediating role of job maturity. Using an electronic questionnaire, data was collected from 349 employees at fast food restaurants in Port Said and Ismailia. The data were analyzed using ADANCO v.2.4 software after conducting exploratory factor analysis for each variable. Results showed that there is a significant effect of external locus of control on career maturity. Results also confirmed that there is a significant effect of relative change on job maturity. Moreover, results indicated that there is a significant effect of career maturity on marketing ambidexterity among fast food restaurant employees. The extracted results provide valuable insights for restaurant industry practitioners and academics.