So, after reading through this forum and realizing that the food I had been feeding was less than ideal. I had posted about my girl, Angel, being a picky little brat. Posters here encouraged me to stop my guys' current food and switch her to something better cold turkey. I switched them to Oxbow chinchilla food. As I anticipated, Demon took to the new food immediately but Angel refused to eat for 3 or so days. She threw the food out of the bowl...The pile of hay was scattered, not eaten. Then, after 4 or so days of a hunger strike, she started eating. The first few days she made her angry noises when I put the new food in, but now she seems to have accepted her new food. Both of them are looking even better on it as well!