Begin by making the Coconut Chicken: In a bowl mix all the ingredients together, except for the chicken. This will be your marinade for the chicken.
Butterfly the chicken breasts and then pound them to an even thickness of about half an inch thick. Place them in the marinade while the grill pan heats up.
Heat the grill pan on medium heat and brush it with olive oil. Grill the breasts in batches until they're cooked through. Place them in the refrigerator until you're ready to assemble the platter.
Right before you're ready to serve them, slice the chicken into thin strips.
Next. cook the rice noodles according to the package directions. Drain them.
Next, assemble the platter: Lay out the lettuce leaves, the cucumbers, the radishes, the noodles, the chicken, the cilantro, and bowls of the peanuts and chili sauce. Let everyone put what they like in the leaves, including a drizzle of chili sauce.