considering how bad their pizza is I wouldn't judge the impossible burger based on them.
This.
I actually like some of their Pizza, but the burger was definitely not worth it.
My kids bought it for me, so I don't know if any questions or options were given. Texture felt like it was fried (though it wasn't oily, but rather dry). With everything that was put on it, the flavors were mainly of whatever dressing was put there. It was an OK edible sandwich, but not a burger or anything I would pay $12+tax for.
ETA: after taste and effects make me regret the experiment, though I am still giving it the benefit of the doubt and blaming those on how it was prepared/served.