You could try setting PieChart.position.shrink to 0. This should prevent the Pie charts from ever being smaller than their position.basis value.
You could also setPieChart.props.style.overflow to “visible”. This would allow the clipped text to display outside the boundaries of the Pie Chart component. Note that you would also need to apply this setting to the parent container, and then possibly the parent container’s parent, and on and on until the text is visible.