It's possible that the first spawn was just that, their first spawn. Like any Cichlid, that spawn is likely to be poorly fertilized. I would leave them, as my own experience is that this species is usually a very good parent. I have this photo of a friend's tank, the male has 1/2" fry all around him.
However, I would make sure there are no other fish in the tank to eat the fry, just to be safe. These fish are not very aggressive toward one another, again, in my experience.
There are two kinds of error: blind credulity and piecemeal criticism. Sound skepticism is the necessary condition for good discernment; but piecemeal criticism is an error. - Egyptian proverb