Look her skin over tiny moving bugs for lice or mites under her vent and elsewhere. I would get some Poultry NutriDrench and give her a few drops up to 2 ml daily. Are these young pullets who havene’t laid yet? I would be tempted to get some Corid at your feed store and treat for coccidiosis. Dosage is 2 tsp of the liquid or 1.5 tsp of the powder per gallon of water for 5-7 days. If you could get a fecal test tomorrow at your local vet to look for worms and coccidiosis, that would be good. If you cannot, I would consider worming her with Valbazen or Safeguard Liquid Goat Wormer.