Preheat the oven to 400 F. Line a large baking sheet with parchment paper.
Cut the broccoli into large florets and the potatoes into quarters.
Toss the potatoes and broccoli a large bowl in 2 Tbsp olive oil, and season with salt, pepper, and garlic powder.
Add the potatoes and broccoli to the baking sheet and pop it in the oven for 20 minutes.
Meanwhile, prepare the salmon. Cut it into four equal pieces (about 4-6oz each) and drizzle 1 Tbsp of olive oil over all the pieces. Coat the pieces with everything bagel seasoning on all sides except the skin.
When the timer goes off, nestle the salmon in with the potatoes and broccoli on the baking sheet. Place the lemon slices evenly around the sheet.
Pop it in the oven and bake for an additional 15 until the salmon is cooked through. With bigger pieces it may need a little bit longer, but pull the sheet out after 15 minutes to test if it's done. No one wants overcooked salmon!
Recipe by Dana Monsees Nutrition at https://www.realfoodwithdana.com/sheet-pan-everything-bagel-salmon/