Whenever there is a yellow coating to the tongue it means there is excess bile in the liver and small intestine. So taking in good oils like Ghee or olive, citrus, cleansing carrot salad and carrot juice, dandelion or peppermint tea, plenty of fiber, and very mild laxatives like prune juice or Triphala, is your best first response.
If you're sweating a lot or have immense hunger back off on spices. If you're failing to sweat and have next to no appetite, increase spices.