Preheat oven to 450 degrees F and line large rimmed baking sheet with silicone baking mat or unbleached parchment paper. Set aside.
Cut chicken breasts in half lengthwise to make thinner cutlets. More sauce will coat the surface of chicken this way.
Grate 2 garlic cloves and mince the other one. This method adds more flavor.
In a large bowl, add chicken, honey, soy sauce, lemon juice and garlic. Stir with tongs and let marinate while oven is preheating.
After arrange chicken in a single layer and bake for 15-20 minutes on the lowest rack, turning once.
While chicken is baking, pour marinade into a small pot and bring to a rolling boil or until thermometer reaches 165 F. It's important to boil it to kill the harmful bacteria.
In a small bowl, whisk cold water with cornstarch. When marinade is boiling, add slurry, whisk and cook until sauce has thickened, about 3-4 minutes.
Remove chicken from the oven and transfer onto a serving platter. Drizzle with sauce and sprinkle with green onion and sesame seeds.