01 - Heat olive oil in a large skillet over medium heat. Add beef bacon strips and cook 4 to 5 minutes until crisp. Remove bacon with a slotted spoon, leaving fat in the pan.
02 - Place Brussels sprouts in skillet cut side down and cook undisturbed for 5 minutes until browned.
03 - Stir Brussels sprouts, add minced garlic, and continue to sauté 5 to 7 minutes until tender and golden.
04 - Return beef bacon to the skillet. Season with salt, black pepper, and red pepper flakes if using. Toss to combine thoroughly.
05 - Remove skillet from heat. Add lemon zest and juice, tossing well before serving.