Dennis Allen was feeling optimistic after the New Orleans Saints started the season 2-0.But a seven-game losing streak, including a 23-22 road loss to NFL cellar dweller Carolina on Sunday, has Allen answering questions about his job security.Allen went 7-10 in his first season with the Saints and improved to 9-8 last year.But with the Saints headed for a third straight season of playoff-less football during his tenure, his seat is getting hotter in New Orleans.“I just think we’ve got to be better,” Allen said when asked about his job.When asked if he thinks he’s doing his job, Allen said, “obviously, when you’re not winning, it’s hard to say you are. I’ve got to be better for our guys. … Here’s what I’ll say: I’m going to keep coming in every day and fighting my (butt) off just like I’ve done since I’ve been here.”Allen and the Saints had hoped …