Early in my read of this book, I found myself not liking it, but I didn't really understand why. Upon reflection, I think it's nearly everything about this series that I have a problem with.
Characters: The protagonist and his allies seem to be willfully clueless. When offered advice or hints or anything that would be inconvenient to the story, they ignore them or aggressively reject them. The various "people" of the kingdom never provide information, just hints and derision when those hints do not cause the characters to solve problems. And the villains are not any better, alternating between mustache-twirling evil, threats to the good guys rather than actions to remove their threat, and fighting among themselves when they might otherwise be too dangerous to the plot.
Setting: Landover is about the size of a medium-sized valley; when the characters need to visit anywhere, they can walk there in hours or days. In principle, at least when the King is present, it's supposed to be safe. Yet it's filled with mysterious and dark places, each with its own danger. Oh, and food is never a problem, because there are magical food trees everywhere. Oh, and the names here are from the Xanth school of naming -- created for a cheap laugh and then repeated forever.
Magic: The magical system seems to be, "whatever is most convenient for the author on this page". There is no structure, there is no system of learning about the magic, and there is no reason to believe that any previously established element of the system is going to obtain in the future.
Plot: All of the above result in a plot driven by authorial whim rather than internal logic. The plot reads like one written by an incompetent roleplaying gamemaster, who expects his players to intuit the one solution to each problem he sets. And when they are unable to do that, he throws in increasingly broad hints, finally just giving the players the answer. And then pouts about his dim players. Nothing in this book, good or bad for the protagonist, is earned. When it's time for something bad to happen, it will. And when the page count is filled, the solution is presented.
Overall, this has rather the feeling of a middle-grade series, with silly names and "magical" magic. But it's not really being marketed as such. And it's not even a good middle-grade series, because it lacks internal consistency and consequences that arise from the protagonist's conscious choices.
Neither this book nor the series is recommended.