Preheat oven to 475.
Toss chicken slices with the marinade ingredients and set aside.
Combine rice and water in a small saucepan, cover and bring to a boil. Once boiling, turn the heat to the lowest setting and allow to continue cooking, covered, while you make the rest of the dish.
Combine flour, sesame seeds and salt and pepper on a plate or in a shallow dish and dredge chicken slices in the mixture. Lay chicken slices on a parchment-lined baking sheet. Place baking sheet in the top rack of the oven and cook for 8 minutes. Turn oven to broil and cook for 3 more minutes, then remove chicken from the oven.
While the chicken is in the oven, cut up the vegetables and combine the ingredients for the sauce.
After you have taken the chicken out of the oven, begin the stir fry by heating a large skillet or wok on medium heat and mixing together the cornstarch slurry in a small bowl or cup.
Add the oil and swirl is around to coat the pan.
Add the garlic and fry until fragrant ~30 seconds
Add broccoli and cook for another 1-2 minutes until broccoli has just barely started brighten in color.
Add wine and cook for another 30 seconds.
Add sauce mixture and stir, then immediately re-mix the cornstarch slurry and add to the pan and cook until sauce has thickened to a glaze.
Add chicken pieces and toss well to coat all chicken and broccoli with the glaze.
Remove pan from heat and toss in scallions.
Serve over rice and garnish with sesame seeds.