Let me be blunt--
Pinkie mice are TOO high in protein for any age bearded dragon. I know of several local pet stores that recommend you weekly feed beardies a pinkie. Of course they do! At $1.49 or more each, they'd *love* to sell you pinkies (especially when they buy them for less than 50 cents a piece).
My reptile vet says "NO!!! It will fatten their liver and shorten their life."
This is such a controversial topic on Facebook. I discourage feeding pinkies ever. The rare exception would be a female who has been bred who just laid a clutch of eggs.
Beardies under a year need 75% protein and 25% greens. Over a year, they need 25% protein and 75% greens. Adults are largely vegetarians and only need insect protein twice a week or less.
Today on Facebook I saw a picture collage of a small mouse who is "friends" with the bearded dragon who refused to eat it.
UGH!!!
Haven't you seen how rodents eat off the skin of snakes they were left alone with? I will not post any pics here because they are horrifying. Rodents EAT anything-- including beardie fingers, toes, & tails. Don't. No mice. Not as food, not as pets for beardies. No. Never.
For a great & comprehensive feeding guide, click the "Bearded Dragon Diet" tab above.