H.I.
My son gets that way too. What I do is I do not give him any other foods if he does not eat any of his food s that are given to him. I try to give him a choice though. Like I will make something to go with what I am making. My son is like me he likes a variety of foods. You could add things to the food you are giving him. Like for the spaghetti you could add mushrooms, chicken to it to give more of a taste. you can add to his other foods as well when you cook something different. If you are giving him vegetables you can add a little butter or ranch dressing or salad dressing. You can add whip cream to his fruit. You can make him soothies and add fruits and vegetables in the smoothie so he is geting his nutrution.