Yes, he is at least nibbling on something. Many turtles do not like people being present while they eat so you may to watch from a far. Since you mentioned that this is a new turtle it is not unlikely that he isnt eating. it could very well take a week or more for him to settle in. I am assuming that this is an aquatic turtle. if so make sure you are feeding him in water that is at least double the length of his shell or more. you may also need to try different foods. I suggest crickets and mealworms or pellets high in calcium and vitamin a. If this problem persists than check with a vet. a turtle not wanting to eat for an extended period of time is the first sign of sickness.