Developing a one-piece chipping motion with minimal hand action is the key to consistency. A firm left (lead) wrist is a primary ingredient. 

A left wrist that breaks down through impact adds loft to the club, causing shots to fly higher and shorter than intended. It may also lead to thin and topped shots. Many golfers hinge the left wrist in an attempt to lift the ball into the air, which is entirely unnecessary due to the club’s loft. 

While you want a firm left arm and wrist, be careful not to tense up or grip the club too tightly. Also, the hands and forearms should be allowed to rotate (without the wrists hinging) on the backswing and follow through. If your wrists are rigid, the clubface will close on the backswing, causing all manner of mishits. 

Practice chipping with the left arm and club forming and maintaining a straight line through the entire swing. The butt end of the club should remain close to the left wrist at all times. Remember to set up with hands slightly ahead of the ball, which creates a downward blow and solid impact.