Preheat your oven to 450F/230C. Toss the tomatoes, garlic, chili pepper with olive oil, salt and pepper. Roast in the oven for 30 minutes or until the tomatoes have blistered and softened up.
While the tomatoes are roasted, prep the shrimp. Peel and devein the shrimp and depending on the size, cut them into smaller chunks.
Season the shrimp with 2 tbsp olive oil, salt, gochugaru, onion powder, garlic powder, and ground black pepper. Mix together and set aside.
When the tomatoes are ready, carefully transfer them (including the pan juices) into a blender. Add gochujang and sugar, and blend until smooth. The consistency should be thick like a pasta sauce.
In a pan, heat the remaining tbsp of oil and add the shrimp. Cook about halfway through then add the sauce.
Toss in the cooked pasta and spinach and cook until the spinach has wilted. Taste and adjust the seasoning if needed.
Garnish with basil and parmesan cheese. Enjoy!