This hainanese chicken rice stall is located inside the S11 Food Court in block 640 Bukit Batok Central, not far from Bukit Batok bus interchange and the MRT station. It has a halal certification from MUIS.
When I went there yesterday afternoon for lunch, this stall has the longest queue compared to other stalls in the vicinity. However, surprisingly the service is quite fast and efficient, and despite the long queue, I didn't have to wait for long to get my chicken rice set.
The price is also, surprisingly, reasonable. Normal chicken rice dish will cost you only $2.50 to $3.00, while more "complete" set with egg, tofu and gizzard like what I had yesterday only cost me $4.00.
Apologise for the lack and the low quality of the pictures, I took them using my mobile phone.