Cosmetic brick repair

Something very heavy just fell on our brick steps outside and chipped off a medium size piece of each of them. I have the intact pieces. What type of glue or other product would be best for me to repair them?

Epoxy.
PC-7 is what I would use.

Is PC-7 a brand, or a description of properties?

A brand
http://www.homedepot.com/p/PC-Products-PC-7-Paste-Epoxy-1-2-lb-087770/100649631#

Epoxy would work best if the pieces are big enough to be drilled then anchored with steel.

The German firm Remmers makes a restoration mortar that can be colour matched to the bricks. It won’t be cheap though…

Wouldn’t it be better to take out the whole brick and replace it?

That probably is the easiest solution, provided a matching brick can be obtained.