If you are looking for a vegan protein bar that is high protein but not high in fat/calories Simply Protein is an amazing choice. They do have some ones with Whey protein, so make sure you buy the vegan ones. They taste kind of like a rice crisp treat. They have a variety of flavours, some with nuts and some that are nut free. My favourites are the pecan flavour, coconut lemon and chocolate raspberry.
The same company also makes a protein chip that is quite tasty if you are more of a salty person. They come in small portioned bags and have a variety of flavours.
In our daily life we don’t eat a lot of protein bars, but we find it is nice to have them when travelling or as a back up snack in the car.