One picture looks like bugs definitely, but another pic looks like powdery mildew, while yet a third looks like it might just be a little nute splash...so one of those 3 depending on the angle of the picture, or if they are different plants, then one has bugs, one has powdery mildew, and another is fine, just be careful when you water...Lol. Either way this plant/plants are/is showing signs of overfert, so ease up a tiny little little bit. If it is all the same plant then it's a toss up..spider mites will make themselves known though..no way to overlook a bunch of little wispy webs everywhere...