Preheat oven to 260 degrees C. Lightly coat a baking tray with olive oil spray.
Mix together pistachios and breadcrumbs in a shallow bowl. In a separate bowl, stir together Dijon mustard, olive oil, honey, salt and pepper until smooth. Dip chicken into Dijon mixture to coat, then coat with breadcrumbs. Place onto prepared baking tray.
Place into preheated oven and turn the oven down to 190 degrees C. Cook until the chicken is no longer pink and the pistachio coating is golden brown, about 20 minutes.