I wouldn't worry about the eggs. Kribs a great parents and if they don't get it right this time, they'll surely have another opportunity soon.
As @ombomb points out, what you DO need to worry about it aggression. Kribs guarding fry could EASILY take over your entire tank and chase all of the other fish to death. I'd keep a careful eye on the tank for the foreseeable future, especially if and when the eggs hatch.
Do you have another tank to house the other tank inhabitants should the aggression increase?