- Preheat oven to 450F. Move the rack to the middle of the oven. Line a large baking sheet with parchment paper.
- Cut the baby bok choy in half lengthwise and trim the dry ends if needed (the white part). Place the baby bok choy on the baking sheet. Pour olive oil on both sides of each piece of bok choy (and rub it in), then grind some pepper on each piece too. I like to roast it face-down first. Place the baking sheet in the oven and roast for 5 minutes/side (it will be tender-crisp with some crispy leaves). If you want it done more, roast it a little longer.
- Meanwhile, whisk the soy sauce, lemon juice, garlic powder.
- Once the baby bok choy is done to your liking, drizzle the sauce on each piece and the sesame seeds and the red pepper flakes (to taste). Serve immediately.