Prepare Marinade the night before, and place boneless, skinless chicken breasts in it to marinate.
Place marinated chicken between pieces of plastic wrap, and use a meat mallet to pound chicken until even thickness
Season with salt and pepper on both sides.
Put butter in a large skillet, and turn on to medium heat.
Cook chicken for 5-7 minutes on each side over medium heat until browned and cooked through. Transfer to a plate and cover to keep warm.
Cook orzo according to package directions.
Slice chicken against the grain, or chunk up.
Assemble Greek Chicken Orzo bowls by dividing Orzo, chicken, tomatoes, cucumbers, red onion, Tzatziki sauce, feta, sweet mini peppers and mint between the bowls. Squeeze fresh lemon over the top and serve immediately.