Celiac also- had chicken rice with no sauce except chili. No autoimmune reaction!! The stall name is just "Chicken Rice". Flavor was average mall food, but so happy to have been able to try it in Singapore.
Harbour Front Mall Chicken and rice place on 3rd floor food court (above the ferry terminal ticketing) no MSG confirmed by a celiac ok
On basement floor in food court is Chicken & Rice, the chicken is safe but rice is not. (Be sure to ask) Just get plain rice nearby!