I believe it's all those months of using just that one irritated expression, that it's just what he got used to
But in today's episode, in the scene where Ahem is teaching Gopi, there was a definite improvement.
I loved watching Nazim's expressions today.He was angry, irritated, concerened, and patient in all the right places.
There's still room for improvement, but he's much much better than he was initially
Now all thats left is to see the fun side of Ahem.
Since Nazim is so fun, that should be the easiest for him.
Yuks