Step 1: In a small bowl, whisk together the chicken broth, soy sauce, and honey/brown sugar. In another small bowl, mix the cornstarch with 2 tablespoons of water to create a slurry. Set both aside.
Step 2: Heat the sesame oil in a large wok or skillet over medium-high heat. Add the diced chicken and stir-fry until cooked through and lightly browned, about 5-7 minutes. Remove chicken from the pan and set aside.
Step 3: Add the sliced green and red bell peppers to the same pan. Stir-fry for 3-5 minutes until they are tender-crisp. Add the minced garlic and grated ginger (if using) and stir-fry for another minute until fragrant.
Step 4: Return the cooked chicken to the pan with the vegetables. Pour the prepared sauce mixture over the chicken and vegetables. Bring to a simmer.
Step 5: Give the cornstarch slurry a quick re-whisk and then slowly pour it into the simmering sauce, stirring constantly. Continue to stir until the sauce thickens to your desired consistency. This usually takes about 1-2 minutes.
Step 6: Remove from heat. Serve the Easy Garlic Chicken Stir-Fry immediately over hot steamed rice. Garnish with sesame seeds and chopped green onions, if desired.