The Library Bar at Sichuan Garden II, MA, Boston, Woburn

I’ve never seen it on the regular menu, only the specials menu. It’s called “Sichuan Flavor Chicken: Panko diced chicken, cilantro, bell peppers, peanut stuffed chili peppers, vinegar.”

http://sichuangardenrestaurant.com/cuisine/specials

That menu also says the Wen Jun Chicken has Thai chili and cilantro. Your definition of “not spicy” might line up with mine. It also has ‘gastriq’ [sic] which might be a sweet and sour sauce?