Most major shopping complexes in Thailand have food courts like the one at Central Plaza in Chiang Mai below:
From there, you can go around, eat and drink to your heart’s content. Usually, there are English food labels and the staff there would at least be able to speak a few words of English.
Even in hypermarkets like Tesco Lotus or BigC have food courts- but in smaller towns, those of Tesco and BigC may not have signboards or description in English. What that is the case, you usually need to use a bit of sign language and point at the food that want.
In case if you are dropping by at Chiang Mai, you can visit their food court at the address below:
Central Airport Plaza in Chiang Mai เซ็นทรัลพลาซา เชียงใหม่
Tambon Pa Daet,
Amphoe Mueang Chiang Mai,
Chang Wat Chiang Mai 50100,
Call Center: +662 021 9999