Marathon pastor Monte Chitty appeared sullen, with his head down, as two uniformed sheriff’s deputies led him from a van into the Key West jail Friday following his capture in Texas earlier in the month.Chitty, 62, was originally arrested by the Monroe County Sheriff’s Office on March 4, one day after deputies accused him of sexually battering a 15-year-old girl inside his church, First Baptist Marathon, located at 200 62nd St.He posted a $75,00…