Struggling to figure out how to eat better without feeling like I'm eating cardboard

For reference, I'm a 5'10" male who weighs 290+ LBS.

I've struggled with my weight and eating habits throughout my entire life, also while struggling with my self esteem with how I look. I know I need to start eating healthier to change this, but it seems like more often than not eating healthier means eating stuff that tends to be bland and boring. Where can I find a good source for healthy (and tasty) meals? And when it comes to stuff like protein powders, would those be good just for meals?