Insects...value..

[kinyonga]

Aside for the suggestion to use canned insects this site has lots of great information...
https://reptifiles.com/feeder-insect-nutrition-facts-chart/

Another site...
http://moonvalleyreptiles.com/files/Feeder-Nutrition-Common-Reptile-Feeders-v1.0.pdf

 

[ERKleRose]

I love Reptifiles!

 

[kinyonga]

Calories for a few insects...
https://allthingsbugs.com/wp-content/uploads/2014/06/AllThingsBugsNutrition.pdf

 

[Klyde O'Scope]

I love sites with tables like that—they're almost always different from one another.