Peyton wasn't the only one that was nervous about the date. Jack may look like he was seventeen but he didn't have seventeen years experiences. That and he really like Peyton. Not just because they had a future daughter together. That just added to his desire to get to know her better. Everything else was simply because he was interested in her. They were on a date so he hoped that meant she liked him too. At the very least wanted to see if she liked him.
"Oh, I love pie," Jack chimed in when she started talking about food. "But we can get nachos. Maybe we can get both. Not at the same time, of course." It would be more like a snack and a dessert.