CNN is shaking up its early mornings — tapping “CNN Headline Express” anchor Brad Smith to temporarily helm the network’s 5 a.m. ET hour as the cable giant leans harder into its streaming-first strategy. Smith, who currently fronts the network’s FAST-channel news roundup “CNN Headline Express,” will begin anchoring the crack-of-dawn slot on an interim basis, the Status newsletter first reported Wednesday. Brad Smith has been tapped to anchor CNN’s 5 a.m. ET hour on an interim basis as the network expands its FAST programming strategy. CNN FAST, short for “free ad-supported streaming television,” refers to internet-delivered TV channels that mimic traditional cable programming but are free to viewers and funded entirely through advertising. Major FAST platforms include Pluto TV, Tubi, The Roku Channel, Samsung TV Plus and Amazon Freevee, which offer around-the-clock news, movies, sports and entertainment channels without a subscription fee.…