Interview discussion is totally based on the product that you are currently working. The interviewer first look out for confidence in you and your work. Once the interviewer sees your confidence level, second they will look out that how you as an individual fit for job role in their organizational structure. So before giving interview, pls do your homework. Thoroughly read out JD and try to find out their requirements. And the most important is "How you as a brand in the market has set yourself." Industry is very small and people in the industry can easily share your feedback. So wherever you work, give 100% and be honest to the organization. Post resignation also maintain healthy relationship with people around you and the management.