Cap irons are always made out of soft material and they are ground at a low angle so they dent up very easily if you set them close without a secondary bevel. If you think it came that way exchange it (contact WC, if they're smart they'll just send you a replacement cap iron). Regardless, whether you keep it or exchange it, put a 50 degree or so secondary bevel on the tip of the top/outside (not the mating surface). This will make it work better if you use it to prevent tearout and keep it from chipping. This is one reason I like the old style CBs better than the supposedly "improved" ones.
BTW, if you were not setting it very close I highly doubt it chipped in use. Unless you are pretty sure you did something to it just try to get a replacement anyway. WC should give you the benefit of the doubt...all of their competitors would.
Woodworking is terrific for keeping in shape, but it's also a deadly serious killing system...