Greek Gyro Pasta with Lamb Meetballs and "Zoodles"

1. Place all the meatball ingredients in a bowl and mix well. Let marinate at room temperature for 30 minutes. 2. Meanwhile, make the sauce. Place all the sauce ingredients in a bowl and whisk to combine. Cover and refrigerate while the meatballs are cooking. 3. Preheat the oven to 375°F. 4. Form the meat into 2-inch balls and place them on a rimmed baking sheet. 5. Bake until no longer pink in the center, 20 to 25 minutes. 6. Meanwhile, make the pasta. Peel the squash and make noodles using a spiral slicer or julienne peeler. Place the noodles in a bowl and toss with the lemon juice, olive oil, oregano, and salt. Allow the noodles to marinate while the meatballs cook. 7. Remove the meatballs from the oven and let them cool for 5 minutes. Mix the tomatoes and onion into the pasta. 8. Serve the meatballs atop the marinated zucchini pasta with a dollop of tzatziki sauce.