Most stories should have a point where they?must complete their goal, a goal set by a specific event in the story, the inciting incident. If they don’t fulfill their goal there will be consequences.
Now, obviously for a comedy or low-stakes drama it is kind of just like, ‘so he doesn’t get the girl, so what?’ But there’s always something that should drive them, make the stakes feel like the world to the character, and to the audience.
And that is why I think the inciting incident you chosen doesn’t work for this story. Maybe in a slight variation, but in this, the only thing I think is, ‘so what? Why do I want to root for someone trying to ruin someone else’s happiness, even if they are a bully?’
Acquiring magical powers is simply too broad, there are so many different things it could motivate someone to do. But an inciting incident should be specific, it should have a clear connection to the goal that is formed.
Why?does Luke decide to fight against the Empire? Because after they killed his family, he has nothing left. Only the opportunity to do fulfill his dream of being more than just a farm boy.
Why does Peter Parker decide to become Spider-man and fight crime? Because had he used his uncle’s teachings before, he would’ve stopped the man who killed him.
Their powers are just the tools they use to achieve that goal. Now, maybe an example of the inciting incident being the bestowal of the powers might be if some evil scientist experimented on someone and now that person uses their power to get revenge. That creates a clear motivation.
I simply don’t think the inciting incident works for the particular story you want to tell.
Also, I think just ‘shy’ works. People know what shy means.
I hope this helps.

I think that the inciting incident is always what makes the character set the goal. In Star Wars it’s when Luke’s family is killed, in Spider-man it’s Uncle Ben’s death, not when he’s bitten by a radioactive spider, or when Luke discovers he can move stuff with his mind. Of course there are cases where the inciting incident is the acquiring of the magic. I can’t think of a good example at the moment.
Different terminology aside, it doesn’t appear that the acquisition of the powers is what make the protagonist set his goal. So on that point I agree with Lars.
However, I do agree with DPG that the humiliation doesn’t seem like something big enough, something to change the status quo.
I hope this helps.