Mediterranean Chicken

First time sauteing chicken. It didn't turn out how I imagined, because I think I overcooked the chicken. Anyway, it has potential!

Ingredients:
-Boneless, skinless chicken breast, cut into 1-2" pieces
-Cannellini beans
-Fresh spinach
-Cherry tomatoes
-Fresh mushrooms
-Balsamic vinegar
-Olive oil (for sauteing)