While I'd like to say that there is a cooking time that will always work perfectly, I can't. This is because every chicken breast and chicken tender is going to be a little bit of different weight and size. You always want to check for the doneness of your chicken to make sure that it reaches an internal temperature of 165 degrees Fahrenheit before eating. For this recipe, the recommended cooking time is 18 minutes due to the size and weight of the chicken tenders that we used. For thinner tenders, reduce the grilling time by a few minutes. For whole chicken breasts, increase the grilling time by several minutes.