SEATTLE – You could be forgiven if you’re under the belief that a scraggly coyote has taken up permanent residence on Michael Chiesa ‘s chin. Aside from his undefeated record and victorious run on “The Ultimate Fighter 15,” the UFC lightweight’s unkempt beard has become his signature feature. But there was a time when he wanted a trim. While filming “TUF 15,” a grueling 13-week season in which fights were shown live, he wanted to reduce the size of his crumb catcher. “The funny thing is that I always kept it a little long,” he said. “But when I was on ‘The Ultimate Fighter,’ I asked them (about it).