01 - Heat olive oil in a large skillet over medium-high heat. Add chicken pieces, season with salt and pepper, and sauté for 5-6 minutes, turning occasionally, until chicken is golden and thoroughly cooked. Remove chicken from pan and set aside.
02 - In the same skillet, add 1/4 cup water and broccoli florets. Cover and steam for 2-3 minutes until broccoli is bright green and crisp-tender. Discard excess water.
03 - Reduce heat to medium-low and melt butter in the pan. Stir in minced garlic and cook for 30 seconds until aromatic.
04 - Add soy sauce, lemon juice, and red pepper flakes if desired. Stir to fully combine.
05 - Return the cooked chicken to the skillet and toss to coat in garlic butter sauce. Cook for 1-2 minutes to infuse flavors.
06 - Gently fold in steamed broccoli until evenly mixed and well-coated with sauce.
07 - Remove from heat and sprinkle with sesame seeds and chopped parsley, if using. Serve warm as is or with rice, pasta, or cauliflower rice.