What’s eating my tomatillo?
Hi- these holes could have been caused by one or more different beetles- flea beetle and three-lined potato beetle are probably the most likely culprits. Unless you are observing an active pest population continuing to feed, it's not necessary to take action. Tomatillo is vigorous and will outgrow the injury if well-cared for.
https://extension.unh.edu/resource/three-lined-potato-beetle-fact-sheet-0 (can be hand-picked if needed)