First, I'll get the obligatory 'Fuck Ikuno' out of the way. May her redemption arc be poorly recieved and universally hated by the readers. Amen.
Second, Amane's frustration actually makes sense. She's annoyed at hearing about girls he liked and can't help but compare herself, noticing that she lacks some of the qualities that he found attractive. However, at the same time, she doesn't want to be like them. She wants to be special. To stand out in Naoya's mind. To not be just another cute girl with glasses.
Or maybe she doesn't want to be associated with girls who couldn't see the value in him like she does. That would be kinda wholesome, actually.