To watch Lexington chef Sam Fore at work in the kitchen is to witness a force of nature. Starting Sunday at 8 p.m. on the Food Network and streaming the next day on HBO Max/Discovery+, you can see for yourself as she competes on the third season of “24 in 24: Last Chef Standing.” Though Tuk Tuk Snack Shop at 124 Malibu Dr. ended regular service last year due to rising food costs, James Beard Award finalist Fore is serving up her signature Sri Lankan-influenced food every Saturday in April from 11 a.m.-3 p.m. there to celebrate 10 years since her first pop-up offerings in a tent. We caught up with Fore for an update and preview of the show…