Rami did that when we first got him and we thought it was nerves. It continued after a few months, so we changed his food (same brand) from chicken to lamb. He had been eating chicken all his life and somehow had recently developed an allergy to it. He still has flaky skin every now and then, esp this past spring when everything started blooming (he's a sensitive guy 😉 ), but for the most part it's much better. I also give him fish oil pills, one with each meal. I would try a better brand of food and maybe stick with chicken, but if that still doesn't help, try beef or lamb instead.