[Prep] Preheat your oven to 400°F (200°C) and line a rimmed baking sheet with parchment paper.
[Make the Cod] Pat cod fillets dry. In a small bowl, whisk olive oil, minced garlic, lemon juice, lemon zest, oregano, thyme, salt, and pepper. Brush over the cod fillets. Place on the baking sheet and bake for 12-15 minutes until flaky.
[Make the Risotto] In a large skillet, heat 2 tbsp olive oil over medium heat. Sauté diced onion and minced garlic for 4-5 minutes until soft.
Add the arborio rice and stir for 2 minutes to toast.
Add the warm broth, one ladle at a time, stirring frequently. Allow the liquid to absorb before adding the next ladle. Repeat for 18-20 minutes until the rice is creamy and al dente.
Stir in the green peas and Parmesan cheese. Cook for 2 more minutes. Season with salt and pepper.
[Make the Crema] In a small bowl, whisk together the Greek yogurt, lemon juice, chopped dill, parsley, grated garlic, olive oil, and salt.
[Assemble] Plate a bed of risotto, top with the baked cod, and drizzle generously with the lemon-herb crema. Garnish with fresh herbs and lemon zest.