Despite its positive impact on students' learning and learning outcomes, studies documenting empirical evidence on how Flipped Classroom anchored in technology-mediated task can facilitate and promote students' learning in post-Earthquake EFL writing pedagogy context remain scarce. To fill this void, this action research, documenting both quantitative and qualitative data, anchored in González-Lloret's and Ortega's (2014) technology-mediated task framework, aimed to garner students' perceptions towards the use of FC-Mediated Task (FCMT) for learning essay writing; how they perceived this instructional approach compared to face-to-face only classes; and what challenges appeared while implementing this approach for the teaching and learning of writing in such a post-earthquake pedagogical context. The statistical evidence showed that the majority of the students positively perceived the use of FCMT for the learning of essay writing. The students also preferred the use of this approach to FTF only classes for learning to write essays in English in terms of the effectiveness and efficiency, engagement, language skills development and motivation. Pedagogical and technological challenges remained their prominent barriers in the implementation of this approach.