What foods are high in protein and safe for chickens?

[chicken farmer]

I'm looking for foods and treats I can give my chickens and chicks that are high in protein

 

[3chickchicks]

Black oil sunflower seeds
Mealworms
Any scraps of meat from your dinner plate
Yogurt (unsweetened, unflavored)
Bugs from the yard

 

[chicken farmer]

Black oil sunflower seeds
Mealworms
Any scraps of meat from your dinner plate
Yogurt (unsweetened, unflavored)
Bugs from the yard

Thank you because I have a silkie hen that went broody 2 days ago and of course it's winter and cold and I want her to have extra protein