For an extra touch of flavor, marinate the shrimp in the lemon-garlic sauce for 30 minutes before roasting. If you prefer a deeper roasted flavor for the Brussels sprouts, you can increase the roasting time by 5-10 minutes. Feel free to substitute other vegetables like bell peppers or zucchini for the Brussels sprouts. Adjust the amount of red chile powder according to your spice preference. A pinch of cayenne pepper also works well. For a complete meal, consider adding a side of crusty bread to soak up the delicious lemon-garlic sauce.