Preheat your oven to 375°F (190°C).
Cook the chickpea pasta in boiling water for 2 minutes less than the package directions to keep it firm, then drain and set aside.
In a large mixing bowl, whisk together the nonfat Greek yogurt, lemon juice, garlic powder, dried oregano, sea salt, and black pepper until smooth.
Fold the drained tuna, chopped baby spinach, halved cherry tomatoes, chopped artichoke hearts, and sliced olives into the yogurt mixture.
Add the cooked pasta to the bowl and stir gently until every noodle is evenly coated in the creamy sauce.
Transfer the mixture into a small oven-safe baking dish and sprinkle the crumbled feta cheese evenly over the top.
Bake for 15-20 minutes until the edges are bubbling and the feta is slightly golden.
Remove from the oven and let it sit for 5 minutes before portioning into airtight containers for your work week.