01 - Preheat the oven to 400°F. Line a large sheet pan with parchment paper or foil.
02 - In a bowl, toss baby potatoes with half of the melted butter, half the garlic, half the lemon juice, salt, and pepper. Spread potatoes on the sheet pan and roast for 10 minutes.
03 - Meanwhile, combine the remaining melted butter, garlic, lemon zest, lemon juice, parsley, and thyme.
04 - After 10 minutes, remove the sheet pan from the oven. Push potatoes to one side. Arrange salmon fillets in the center and surround with zucchini, tomatoes, green beans, and red onion.
05 - Drizzle the lemon garlic butter mixture evenly over the salmon and vegetables. Return the pan to the oven and bake for 10–12 minutes, or until salmon is opaque and flakes easily with a fork, and vegetables are tender.
06 - Broil for 1–2 minutes for a golden finish, if desired.
07 - Garnish with lemon slices and fresh parsley before serving.