My eastern kingsnake (female, 2 yo in a couple of months )?

has become extremely 'hyper' she also refused a meal which had never happened before. She is close to shedding but she's never been as restless as she's been for a couple of weeks now. I even got her a larger tank and more comfortable hide, but she keeps roaming day and night. She takes short rests, then she starts again. I checked for parasites , or ticks, but she has none . Why is she so nervous !?