Jaden's eyes widened with alarm at the question put toward him. Had he been careless? His mind began working trying to figure out what he may have done to possibly let on about his power. His ordering three pieces of pie? Was that too much at once? Three was barely a snack for him though, he had to order at least that, or he would have been up at the counter asking for another piece already. He glanced at his leg. Bounding up and down, unable to ever sit still. In fact, looking at everything, including the speed he probably ate the first piece of pie at, he was very careless. Very stupid.
He wanted to try and play it cool, but still being new at the whole social thing, that was probably not going to work as well as he might have hoped. Looking back on the scene later, he would come up with a hundred different ways to reply to her question all of which would have sound more convincing than, "What?"
Yes, that's right, What? The absolutely worst way to convince someone to not focus on the thing he wanted to avoid. Not only that, but a girl, probably one of the first that actually spoke to him since he began school. In his mind he was already thinking of how stupid he was for how he was managing the situation.