This is 4 lined plant bug damage. These herbivores are generalists, feeding on herbs, ornamentals, and weeds. Though it doesn't look great, it won't affect the longevity of the plants. Insecticides aren't needed for plant protection but if you choose to protect other plants use an insecticidal soap or pyrethrins on days when temperatures are below 90 F. Insecticide use will not cause the spots to go away, as these result from the insect feeding.