Red Robin Tavern Double Burger TV Commercial, 'Hallucinations'

Melanie Paxson, the Red Robin lady, is biting into the fiery-ghost style Red Robin Tavern Double Burger. She says the jalapenos are so spicy, the burger can cause hallucinations. She laughs, says that's ridiculous and gestures to the empty chair next to her in saying that they haven't had an issue. But, whom is she talking about?