Use the slow-mo ability before the chameleon spits its fireballs, then hit it with a punch to scrap it. Then, use it before climbing the leaves on the water spouts ahead. Finally, keep slow-mo active ...

Stay vigilant while speeding in on the Dual Speeder! You'll find the first puzzle piece on a tornado flying across the landscape. Hold L2 and R2 and tilt your controller to speed into it and collect!