Is it possible to change the FOV of camera?

Currently, no. The game has somewhat limited customisation options, as should be expected because it's early access. I'm also not sure if they'd change it in the main game, because I imagine it would require an entirely different mechanism to handle the cockpits to scale accordingly when in first-person.

Fov for 3rd person would be nice. I get kinda motion sick.

On steam people got fov adjustment yesterday.. Need gog to update game asap.