Preheat your oven to 400°F (200°C).
Toss the cubed sweet potatoes with half of the avocado oil, salt, and a pinch of cinnamon if desired, then spread on a baking sheet.
Roast the sweet potatoes for 15 minutes, then add the green beans to the same tray, tossing them in the remaining pan oils.
Continue roasting the vegetables for another 10-12 minutes until the potatoes are tender and the beans are slightly blistered.
While vegetables roast, season the salmon fillet with salt, pepper, and garlic powder.
Heat a non-stick skillet over medium-high heat with the remaining half teaspoon of avocado oil.
Place the salmon skin-side down in the pan and sear for 4-5 minutes until the skin is crispy.
Flip the salmon and cook for another 3-4 minutes until it reaches your desired level of doneness.
Plate the seared salmon alongside the roasted vegetables and drizzle with fresh lemon juice before serving.