I know that place (food-court) you mentioned. It's at the Temerloh Pasar Minggu area, right?
Whenever I'm in Temerloh, I sometimes also stop by there for ikan patin dishes. And I can vouch the patin dishes there are really tasty.
In fact I also like the place for its variety of other traditional Temerloh dishes, with ulam (raw veggies) and many types of sambal, jeruk, etc.
I actually have a few other favorite ikan patin stalls and restaurants in Temerloh, usually depending on where I am in the town. When my hunger pangs sing, I just go to the nearest one!