Boil a large pot of salted water, add ½ the bag of couscous + stir; cook 5 min, then drain; add to a large bowl, drizzle with 1 tsp oil + season with salt/pep

Meanwhile wash, then slice zucchini into ¼-inch chunks; heat 1 tbsp oil in a skillet over med-high, add to the pan, season with salt/pep + sauté 3-4 min until tender; stir zucchini + half container of fresh salsa into couscous

Pat tuna steaks dry, season with half the seasoning blend; heat 1 tbsp oil in a skillet over med/high + sear fish 2 min per side for med-rare (for well-done cook 1 min more per side)

Divide all to plates