24-year-old chef Jessica Floyd has been working between 14 and 17 hours a day for the last two weeks at Islero, the new “modern Spanish” restaurant on 50th Street. The chef, who also handles the pastry program, hasn’t had a break since the place opened 11 days ago, and things aren’t slowing down any time soon. Islero will open for lunch service on March 3rd, and Floyd’s working on a bunch of ideas, such as......