Preheat your oven to 400°F and line a baking sheet with parchment paper.
Toss the cubed sweet potatoes with half of the olive oil, garlic powder, and a pinch of sea salt.
Spread the sweet potatoes on the baking sheet and roast for 15 minutes.
Add the rinsed chickpeas to the baking sheet, tossing with the potatoes, and roast for an additional 10 minutes until the potatoes are tender and chickpeas are slightly crispy.
While vegetables roast, season the salmon fillet with sea salt and black pepper.
Heat the remaining olive oil in a non-stick skillet over medium-high heat and sear the salmon for 4-5 minutes per side until the skin is golden and the flesh flakes easily.
In a small bowl, combine the diced cucumber and halved cherry tomatoes with lemon juice and a pinch of pepper.
Serve the pan-seared salmon alongside the roasted sweet potato and chickpea medley and the fresh cucumber-tomato salad.