My dog isnt very interested in food

So im not sure if this is normal behaviour or not. I have a corgi, and as most corgi owners know they tend to be VERY food motivated. However, mine is not. He often leaves his meals either untouched or has a couple bites then leaves it. He gets fed half a cup of kibble morning and evening. It is usually his breakfast that he leaves and then he will eat his dinner at night, occasically eats just breakfast or both meals. He generally always has at least one. He is never excited for his food (was for maybe a week or so after we got him) and often seems to have no interest in it. I leave it for 15 minutes then take it away until his next meal. He seems to be a good weight, and he is active. He gets fed high quality kibble. We tried different flavours and brands but this is the only one that sits right with him and he still didnt care (yes we transitioned slowly and kept feeding it for long enough but it didnt help) i feel bad that he doesnt seem to enjoy it and i worry he isnt eating enough even though he is not underweight. Should i only feed once a day instead? It just seems like such a long time with hiking and such to not eat anything until the evening.