01 - Heat olive oil in a large skillet over medium-high heat. Add the chicken pieces, season with salt and pepper, and cook for 5 to 6 minutes, turning occasionally, until chicken is golden brown and thoroughly cooked through. Transfer chicken to a plate and set aside.
02 - In the same skillet, add 1/4 cup water and the broccoli florets. Cover and steam for 2 to 3 minutes until the broccoli is bright green and just tender but still crisp. Drain any remaining water from the pan.
03 - Reduce heat to medium-low. Add the unsalted butter to the skillet and allow it to melt completely. Stir in the minced garlic and cook for 30 seconds until aromatic.
04 - Add soy sauce, lemon juice, and red pepper flakes (if using), mixing well to combine with the butter and garlic.
05 - Return the cooked chicken to the skillet and toss to coat thoroughly in the garlic butter sauce. Cook for 1 to 2 minutes, ensuring all pieces are well coated.
06 - Stir steamed broccoli into the skillet to combine. Remove from heat. If desired, garnish with sesame seeds and fresh parsley before serving.
07 - Serve the chicken and broccoli warm as is, or over steamed rice, pasta, or cauliflower rice.