Jack Dylan Grazer did not receive an Oscar nomination for portraying Edward "Eddie" Kaspbrak in It.
One of the elements that works so well within this adaptation of Stephen King's novel is the coming of age story of the kids that could almost stand separately from their time dealing with a killer clown from outer space. This is further amplified by the terrific ensemble of juvenile performers that form their group known as the losers club. Although perhaps a couple of them are a bit under served by the screenplay, Chosen Jacobs as Mike and Wyatt Oleff as Stan, together they excel in a few ways. One being in every single one of the horror scenes where not a single one of the actors falters. They help to bring to life the horror in intimate detail as they effectively heighten the tension of each and every encounter. They are as good though in terms of creating this group dynamic of these kids. They do just behave in this uniform way of all good little kids falling into line as friends. No, what they do is make a far stronger dynamic by so naturally realizing the richness of their interactions which aren't always wholly pleasant for some of the members yet so effectively allude to the history between the kids who already know each other and the brewing history with the new additions to the group.
Although obviously in this review I am focusing in on Jack Dylan Grazer as Eddie, who is in the "upper tier" in terms of both of those aforementioned elements. His scenes of terror are particularly strong in that regard especially his direct moments with the fellow mentioned below. Grazer frankly sells something even far more terrifying than we even see through the sheer petrified terror he able to realize within his performance as Eddie. He goes all in in creating every gasp, and panic in his body language so very real. Again while the horror is important what makes this film stand out within the horror genre are the kids. My favorite, and really most realistic dynamics within the kids, is their constant ball busting one another spearheaded by Finn Wolfhard's Richie, who tries far too hard to make everything a joke, and that's entirely the point. Jack Dylan Grazer, who apparently also came up with a lot Richie's one liners, is actually delivers the most abundant humor in the film. His realizes this isn't so much in Eddie's effort to make a joke but rather his reactions towards Richie's jokes. This includes some general frustration that Grazer realizes so naturally as the friend who just can't believe the stupidity of his friend at times, the best moments in this though are whenever this takes the form of indeed a counter joke. These are always placed right after something Richie says, and Grazer's delivery is dynamite every time by so boosting the moment through his portrayal of Eddie's sheer annoyance as he comes up with his own comeback. It's terrific as Grazer actually ends up being the funniest of the kids by so effectively realizing this dynamic with Wolfhard as Richie. In addition though, even in their sometimes rough jokes, they both create this underlying sense of genuine care for one another even if it isn't directly spoken very often.
An important aspect of this is that Grazer's performance, despite some of cruder choices in subject matter and vocabulary, still makes Eddie a normal kid. This isn't even in his scenes with the monster where obviously Eddie is particularly vulnerable. In even his verbal sparring with Richie that frustration Grazer brings is very much with the right earnestness within petulance of a child. There is also though more to this in his portrayal of the hypochondriac side of Eddie that he makes a very naturalistic part of his character. In the moments where they are just near something dirty or when he's talking about disease Grazer captures the intensity of the anxiety of a kid without proper foresight or guidance. Grazer makes it something that seems to pester him throughout showing well the way it is a near hysterical fear that is pervasive in him. The best moments though of his are when Eddie comes face to face with his overbearing mother where Grazer most strongly reveals the true innocence of Eddie. These moments are terrific because he plays them entirely lacking of the pretense of the "maturity" when hanging out with the rest of the friends. He shows just a really scared kid and constricts showing in his eyes as though Eddie is looking some sort of comfort from his mother to which he is given the exact opposite. Grazer's best scene in the film is when he directly confronts his fears by confronting his unloving mother after finding out she has been giving him placebos that only contributed to his anxieties. Grazer's great in this scene on a dramatic level again because he doesn't suddenly become an adult but rather is all the more moving by truly revealing this innocent delivery of Eddie's rejection of his mother's behavior. It's beautifully realized as he finds still a bit of fear as he says he has to help his friend and in turn makes that determination all the more powerful. In addition it's a downright hilarious as well through his flawless, purposefully unknowing, delivery of "They're gazebos!" when decrying the placebos. Grazer gives a wonderful performance here that realizes Eddie's arc so well while also just contributing just a little something special to every single scene he is in.