The 18-year-old, making just his second appearance for the club, helped the Dolphins secure a first league win at home in 2018/19.
With just 20 minutes on the clock, Henry stepped up to convert a penalty after Jordan Alowode-Williams was brought down.
Fresh from netting his first goal in red and white the teenager added a second before the break.
Picking up Josh Leslie-Smith’s pass on the right, he was bundled to the floor by a Farnborough defender but picked himself up to charge into the box and neatly pick out the bottom corner.
Enjoying a 2-0 lead at half-time Henry completed his hat-trick on 54 minutes with his second spot-kick of the match.
After Sam Griffin was brought down, Town’s striker made no mistake from 12 yards to ensure he’d take home the match ball.
Adding a further three goals before full-time Henry was awarded the man of the match accolade for a fine performance.
Next up, Poole head to Dorchester Town on Tuesday night in the Southern League Cup.