In a mixing bowl, combine the cubed chicken, garlic powder, black pepper, and chili flakes. Toss until the chicken is evenly coated. Then sprinkle the flour over the chicken and mix again until all pieces are lightly coated.
In a large skillet or wok, heat 2 tablespoons of extra virgin olive oil over medium-high heat. Once hot, add the chicken in a single layer, ensuring not to overcrowd the pan. Cook for about 5-7 minutes until the chicken is golden brown and cooked through. Stir occasionally to avoid burning.
Once the chicken is cooked, remove it from the skillet and set it aside. In the same skillet, add another 2 tablespoons of olive oil and the broccoli florets or asparagus. Stir-fry for about 3-4 minutes until the vegetables are vibrant and slightly tender.
While the vegetables are cooking, prepare the sauce. In a small bowl, whisk together the tamari or soy sauce, lemon juice, honey, grated garlic, and chili paste. Once the veggies are cooked, pour the sauce over the vegetables and return the chicken to the skillet.
Stir everything together, ensuring the chicken and vegetables are well coated in the sauce. Cook for an additional 2-3 minutes, allowing the sauce to thicken slightly and coat the chicken and veggies beautifully.
Once everything is well combined, remove from heat. Drizzle with toasted sesame oil, sprinkle with sesame seeds, and garnish with chopped green onion. Serve immediately over rice or noodles for a complete meal.