“it?s not the power/curse, the inciting incident is: humiliation by the antagonist who steals away his dream girl.”

Oh.

When a jock humiliates him in front of his crush, a socially awkward teen must use his ability to see the desires of females he touches to win her heart. (30)

It could be shorter but that’s the best I’ve got for now.

An inciting incident is usually put after the word ‘when’ or ‘after’. You said “When misfit teen who struggles to understand girls gets the power to visualize the desires of any female he ?touches” which indicates that once he starts visualizing these desires is the inciting incident. If the power is the inciting incident, then you have to put it as the action he uses to achieve his goal. “must use?his ability to…”
I don’t know exactly what you mean by someone who doesn’t understand anyone, but a person who is unadept at social situations is socially awkward. Someone is fears social situations is socially anxious. They have a lot of overlap.

“After helplessly witnessing his brother murdered by a vicious gang, a disabled man in LA?sets out one night on his homemade killing machine to seek vengeance.”

Before responding to the rest of what you typed, I will look at the logline on its own. I see what you’re trying to do with inciting incident, but I think maybe some rewording could help. Otherwise, what’s really wrong is that even though you have clear, specific inciting incident, the rest is vague. What kind of disabled? Paralyzed? What disability would greatly affect his ability to get revenge? What is his homemade killing machine? Seek vengeance against whom? The gang leader? Every gang member? Every one of the ones involved in his brother’s death?

Here’s my example:?After a street gang murders his brother in front of him, a paralyzed engineer must use his weaponized wheelchair to avenge his brother’s death. (24)

Now, the hook would probably be that a disable man is taking up vigilante activity, with a homemade weapon, no less. This is no Matt Murdoch, no Daredevil with his enhanced senses and ninja skills, it’s a normal guy at a disadvantage. The hook shouldn’t be an omission of information that is vital to the plot. The hook should be dangled out, bait to get attention. If your hook is this killing machine you’ve thought of, something unlike anything ever seen before, then it should be out front and center.
As for the idea for the story, I see two things. One is originality. Sure, maybe this killer bike is awesome and cool, but the only thing I thought of when I was reading was ‘The Punisher gets a bike with guns.” Or even just Batman who kills(or you know, just Zack Synder’s version, just in a wheelchair.) The second thing is the antagonist. One of the major criticisms of vigilante or superhero films is that their villains are just meat sacks who are evil. I suggest creating a specific antagonist(s), someone who wants something specific, someone who has motivation and isn’t just the last guy to be gunned down.
I suggest using the gang leader or his/her second in command. Why did this person want his brother dead? What will it accomplish? Why are they in this gang?
Something I do is create a logline for all major characters. Protagonist, mentor, antagonist, side character. Why does Angel help?
I hope this helps.