You can use boneless skinless chicken breasts or thighs. Our favorite are thighs because the flavor is more rich and chicken thigh bites are less dry. If you're cooking with chicken breast, make sure to eat them as soon as they're cooled. If you let chicken breast sit too long or get cold, they will taste dry and tough. Can you add veggies with this? Sure you can, but make sure it's a veggie that can cook quick at the same time as the chicken. Also, make sure to keep the veggies cut small.