Yesterday I had to get on the brakes pretty hard because of some old lady pulling out in front of me. But when I did I heard 2 distinct popping noises from the front of the car. One left, one right (side).

They were in very close succession with one another.

I'm wondering what this sound could be.

Can brake pads shift in the caliper? Calipers are torqued correctly, same with the caliper mounting brackets.

What should I be looking for here?