I think "good" food is really subjective. It has a lot to do with what your goals are for raising chickens. If you are looking for an all grain feed then this seems like it could be good option. Some people prefer a feed with animal protein and others prefer without.
This looks like a grower or flock raiser type feed. As they mention, this means that you will likely need to supply an separate calcium source. This can actually be a good thing because when the calcium is separate the birds will only eat it as needed and will not get too much. So, if you have a mixed-age flock at any point or a rooster or molting birds, they will not be over-eating calcium like they might be with a layer feed where the calcium is mixed in. (You never want to give layer to young birds who are not yet laying). But, some people prefer a layer for their hens so they do not have to deal with the extra calcium.
This does not appear to be organic. Which may or may not matter to you but if it does make sure what you buy specifically says that -- it does tend to cost quite a bit more.
Does the feed bag come with any other labels? They will using have a tag on the side that has a complete breaking down of all the nutrition like % calcium, % amino acids, etc. If you are concerned you can also compare it with other foods you are looking at the see what is actually different, especially if you are trying to compare what you are getting for what price.