Preheat the oven to 400°F and line a large 13x18 baking sheet with parchment paper.
Add the halved baby potatoes onto the baking sheet and drizzle with oil and the seasonings. Toss until potatoes are fully coated. (You can use a bowl to season the potatoes, then transfer to the baking sheet.)
1 1/2 lbs baby red or gold potatoes, halved, 1 ½ Tbsp olive oil, 1 tsp salt, 1 tsp garlic powder, ½ tsp ground black pepper, ½ tsp paprika, ½ tsp Italian seasoning
Bake at 400°F for 25 minutes, until potatoes start to become tender.
Meanwhile, add the oil, Dijon mustard, salt, garlic powder, paprika, ground black pepper, and Italian seasonings to a bowl and mix to combine. Add the salmon fillets to the mixture and toss to combine and fully coat the fillets. (You can marinate the salmon up to 2-3 days in advance in the fridge.)
3 Tbsp olive oil, 2 Tbsp Dijon mustard, 1 tsp salt, ½ tsp garlic powder, ½ tsp paprika, ½ tsp ground black pepper, ½ tsp Italian seasoning, 4 salmon fillets, about 1½ lbs
Trim about 1/2-1 inches off the ends of the asparagus and toss with oil, salt, and peppers.
1/2 lb fresh asparagus, 1 Tbsp oil, ¼ tsp salt, ¼ tsp ground black pepper
Once the potatoes have cooked for 25 minutes, remove the sheet pan from the oven.
Move the potatoes to the edges of the sheet then add the seasoned asparagus next to the potatoes on both sides.
Add the salmon fillets in the center of the sheet pan, along with 3-4 lemon slices around the salmon.
4 fresh lemon , slices
Bake at 400°F for an additional 10-12 minutes, until everything is cooked through. (The internal temperature of cooked salmon is 145°F)
Remove from the oven and top with freshly chopped herbs and serve immediately.