Once Verrian gives the warning, it doesn't take a keen eye to notice something is out of the ordinary.
Within moments, the food the woman had taken is gone. Devoured. And she's looking around for other things to eat.
She sidles up to one of the men, as though trying to be sneaky, and her hand shoots out to try and steal something from him. He turns with alarming quickness and... you can watch it happen. His mouth and lower jaw quickly grow large and distended. He snaps his teeth at her -- teeth that haven't changed at all from their human form -- and she jumps back. Suddenly, she bellows out, "HUNGRY! SO VERY HUNGRY!" and jumps on the man. They begin wrestling on the ground, weirdly giant jaws snapping at one another ineffectively. The man's food share tumbles to the ground, and the other man and woman -- not the one who's been speaking to you, though -- scurry over to start gathering it up, snarling warnings at each other, muttering, "hungry... so very hungry" while their companions try and gnaw on each other.
The man who's been speaking turns crestfallen, his face falling into an almost comically large frown as his features broaden and elongate too. His speech is halting and slurred from his growing jaw. "Wery sorry... you see, we're so wery hungry." He gestures at the scene as if those words explain everything.
"Stop! Stop, you aglax iasutur wak!" he yells at them, waving his arms in the air to try and get their attention.
At least, you think that's what he calls them. It's not a language any of you understand, that's for certain. The situation is growing increasingly chaotic despite the ... man's? ... best efforts to calm it down, but they don't seem to be threatening you at all yet.