Oh dear! Who is responsible for this typographic crime? It upsets me deeply. For those of you who don’t know, kerning is the process of adjusting the spacing between font characters to achieve a pleasing result. Whoever did this cover didn’t employ kerning.
When choosing a book cover designer, it’s best to ensure that they have had proper training; typography is one of the subjects taught on Graphic Design BA courses. Have a look at your prospective designer’s online portfolio too – and check the book’s imprint details or back-cover credits to see who really did the design. Not all designers are as honest as me!