Normally it's the analog-to-digital converter (inside the interface) that clips so the clipping indicator on the interface should normally work...
If you are using Windows drivers it might be
microphone boost or some other "enhancement". If you're using ASIO drivers (if it has ASIO drivers) you should be "capturing" the digital-data stream directly & accurately.
If the pad works you can use it, or you can turn-down the volume control on the guitar. Digital recording volume it not critical as long as you are not clipping. Pros often record at -12 to -18dB.