Fumble had a strike on his food for a long time! he would almost always refuse to eat. and then all of a sudden, after about 8 months of being "picky" he changed his ways and now LOVEs to eat again. maybe it's a stage the big paws go through?
he might be bored with his food. you could maybe try to add some of the wet variety to the kibble to see if that could entice him! we tried EVERYTHING with fumble! salmon oil that had the flavor, yogurt, cheerios... the one thing that worked the best was the new wellness 95% salmon. he LOVES the canned stuff. we just add it onto his food and mix it in. or we used to anyways. now he eats the straight kibble. and this is the same food that he wasn't eating before, so i guess he wasn't bored. he was just in a "picky" phase.
Good luck!! and if all else fails you could be like me and hand feed him each bit of kibble at the beginning to "wet his appetite" lol!