Anyone’s LO picky about food?

How are y’all handling it? Kiddo is in the 7th percentile of weight gain, he’s been in the 10th pretty much since newborn. He doesn’t wanna eat much, he’ll eat a bite of egg here and there, sometimes meat. He mostly likes fruits and yogurt, I can’t seem to get him interested in much. Any help? We offer a variety of food, different shapes, colors, etc. He won’t take pedia-sure or formula. Pediatrician says he’s okay just on the smaller side, but I want him to be healthy and eating enough.