Chicken breast is the blandest part of chicken because it contains so little fat, and so much of the flavor of meats is carried in the fat.
Get some skin-on chicken thighs, salt them, and roast them in the oven. I assure you there will be more flavor there than in skinless chicken breast.
There are some fishes, like tilapia and halibut, that are about as mild in flavor as chicken breast.




Relevant XKCD.