Is your dog rejecting kibble because he knows something better will be offered to “poor baby, won’t eat?”
When you treat them like family, they do want to eat what you eat. Most dogs will very happily eat apple slices, green beans, and just about every fruit or veg you are preparing in the kitchen (not leafy greens, for the most part, that texture just makes them spit it out and ask you where is the “food”?)
I had to retrain a very picky foster dog by keeping a bowl of frozen beans on the table while I was eating. He would have to wait until I finished, then he got those beans dumped on his kibble. I cut back on the beans until he was fine with a bowl of kibble served immediately after I ate.
Those healthy low-cal snacks in a bowl works well for those humans who just can’t be trained not to feed the dog snacks from the table. If it comes from the table, the dog will love it!
Most extreme case I counselled: The dog had severe kidney disease and the owners were paying for a transplant operation. Puppy had to adhere to a very strict prescription kibble, which he would not touch until fed kibble-by-kibble from the table as a treat.