Great question — answering as the UphillTech team:
Krabi airport has two terminals, I presume you're referring to the international one. As of January 2017, the fresh food selection once past security & immigration when departing is limited to a cafe. I can't claim to recall its menu in detail, but the offerings were overpriced and bland, certainly no edible insects in sight (and this is not a thing you really see outside street food/night markets anyway). There are also a bunch of souvenir shops selling dried mangoes, cans of Pringles etc, with 200-300% markups. I specifically recall the same bag of dried mango that's around 250 baht at the supermarket being hawked for 600.
Full answer by lambshaanxy: https://travel.stackexchange.com/a/104841 (CC BY-SA 3.0).
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