Preheat oven to 400°F
Place shrimp in a bowl. Toss with 1 tablespoon olive oil, 1/2 teaspoon cumin, salt, and pepper
Spread shrimp in a single layer on a lined baking sheet. Set aside
Heat remaining 2 tablespoons olive oil in a large pot over medium heat
Add onion and peppers. Cook for 4–5 minutes until softened
Add tomatoes, garlic, parsley, remaining 1/2 teaspoon cumin, salt, and pepper. Cook 1–2 minutes until fragrant
Add yellow rice mix and stir to lightly toast
Pour in white wine and cook for 1–2 minutes until slightly reduced
Add seafood stock and bring to a simmer
Cover, reduce heat to low, and cook for 20 minutes (do not open lid)
After rice has been cooking for 12–13 minutes, place shrimp in the oven and roast for 6–8 minutes, until pink and just cooked through
Remove shrimp from oven. Remove tails if desired. Chop half into bite-size pieces and leave the rest whole
Once rice is done, uncover and fluff with a fork. Stir in frozen peas and adjust seasoning
Add shrimp, gently mix, and serve immediately