A blurry cell phone photo reportedly shows Anthony, 26, with a basket of hot wings and fries at Flanigan's Seafood Bar and Grill in Lake Worth.
If the picture proves to be genuine, it will be her first public appearance since she was acquitted of murdering Caylee.
Gossip Extra revealed the photo, taken Friday, as possible proof that Anthony is hiding out in South Florida.
Casey has long been rumored to be in Palm Beach, near Lake Worth, but it has never been confirmed.
Jose Lambiet, the founder of Gossip Extra, has offered a $1,000 bounty for 'irrefutable proof' that she is living in Palm Beach County.
In the picture," Casey" is wearing a white knitted hat over her dark hair, as well as a white blouse and beige cardigan.
According to Radar Online, sources have confirmed the woman seen in the photo is indeed Casey.
She is seen sitting next to an unidentified bald man. Regulars at the restaurant said they don't know the man and had never seen him before.
Gossip Extra reports that Pat McKenna, a private investigator who worked on Anthony's case and also help clear OJ Simpson, was seated across from the two.
McKenna is not seen in the photo, but reportedly paid for the meal with a credit card with his name on it.