Finding food is easy in Kundasang. Most of the restaurants located next to the main road. Please be reminded though, majority of the shops here do not operate until late night, so you may want to stock up at the local mart or get yourself full at nearby restaurant before calling it a day. However, most of the homestay here allow you to cook, so go buy local vegetables at the roadside market.
At bigger establishment like hotel, a bigger restaurant can accommodate larger group of tourist to Kundasang. Ring them to book in advance.