This exploratory practice study, conducted at the Higher Institute of Human Sciences of Jendouba and the Higher Institute of Languages of Gabès, Tunisia, investigated the impact of task-based language teaching (TBLT) on pre-service teachers' functional competence and explored both teachers' and students' perceptions of TBLT in their English courses. Data came primarily from classroom observations and focus-group interviews. Findings suggest that TBLT fostered pre-service teachers' functional competence in English. Both teachers and students reported that TBLT helped improve learners' linguistic and communicative skills.