When I teach, I have four bullet points for chipping and pitching.
The first point is the ball has to be somewhere between your feet. I know this can sound obvious but I’ve seen tons of players putting it behind their back foot. I find this causes a “Stab” down at the ball and poor contact.
The second point is the grip of the club must be ahead in reference to the ball. The less the grip is ahead, the more loft at impact. You will be amazed at how high you can hit a pitch shot when the true loft of the club is used.
The third point is your weight should be on your front foot AND stay forward through the shot. Amateurs sway their weight onto their back foot during shot game shots. This shift causes the bottom of the arc behind the ball, causing chunks.
A fourth and final point – On the takeaway, the clubhead cannot swing to the inside. If the takeaway gets too flat, the club can do one of two things. The clubhead can shallow out too much, which causes the club bounce to skip into the ball. The other outcome is we swing the club too steep and the leading edge digs and we chunk it. Keep the clubhead even or in front of your body for better contact.