overzealous
adj. B2 Upper Intermediate US //ˌoʊvɝˈzɛɫəs// UK //ˌəʊvəzˈɛləs// overzeal·ous
adj. doing something with too much energy or excitement, often to the point of being too strict or too much. It describes someone who is trying too hard to follow rules or achieve a goal.
adj. characterised by excessive eagerness, enthusiasm, or strictness. Often describes a person or action that exceeds reasonable limits in the pursuit of a goal or the enforcement of rules.
The overzealous security guard checked everyone's bags twice.
An overzealous manager might micromanage every small detail, making it hard for the team to work efficiently.
The overzealous application of the new safety regulations led to significant delays in the construction project, as every minor oversight was treated as a critical failure.
From over- + zealous.