I hear you and I do think there are more "shortcuts" (on the other hand, breaking down a chicken is work too but probably an improvement for the meat eater over packaged breasts).

But beans and legumes are very little work and store for ages, etc. Quinoa and the like too, easy/ Depending where you live you may have good sources of fresh tofu & seitan, etc.

If you are looking for "same meal, but X instead of chicken" it's more work, granted. That's hardly the only option though, and learning a range of dishes from traditionally vegetarian or near vegetarian cuisines can help generate a list of easy & tasty alternatives.