Husband having dental/roof of mouth issues

Hi! Sorry for the picture lol. My husband is going to the dentist on Thursday, but for now - what do you ladies think? He didn’t burn the roof of his mouth while eating anything. He said it feels “filmy”. It doesn’t hurt at all. Just noticeable when he touches it with his tongue. He’s not fond of going to the dentist (I had to call and schedule it myself 🤦🏻‍♀️😂). I just thought I’d ask for someone else’s opinion!