Another chick a month earlier was doing the same thing, and thought maybe best related stress, but it died
A vet didn't permethrin was a problem
she walks like she's drunk
Hi
@Primer 
Welcome To BYC
Were you able to speak with a vet? Can you take a fresh poop sample in to have them test for Coccidiosis?
The pullet that died a month earlier - did it also eat dead bugs that were sprayed with Permethrin?
You mention Dumor Chicken Feed - what type - Layer, Grower, Chick Starter?
How long have you had the pullets - how long have they been outside?
Check your feed to make sure it's not gotten moldy, wet or rancid. I see that you have the feed in a tub - that's fine, but is it a mix of chicken feed with corn, sunflower seed, etc. - it's hard to tell. If you're mixing other things with the chicken feed (goodies) chickens generally won't eat the food that is best for them and can become deficient in essential nutrients - your pullets are still growing, so it's important they eat a balanced ration every day. Corn, seeds, etc. make great treats, but should not be more than 5-10% of daily intake depending on the amount of protein that's in your balanced poultry feed.
Now, let's look at your pullet - look in her ears just to make sure she has no ear mites or infection which can cause a balance problem.
Balance problems can be a number of things - vitamin/nutritional deficiencies, ear infection, diseases like Marek's, ingesting toxins and neurological/developmental disorders are a few. Without testing, it's hard to know what's going on with her. Since you had another with similar symptoms, if you happen to lose her, it would be best to send her body for testing at your state lab to see if it's something that can be treated and/or corrected.
It won't hurt to start her on vitamins to see if there is any improvement. Provide her with B Vitamins - you can crush a human B-Complex tablet and add it to her feed daily. Add vitamin E along with Selenium as well.