Heat 2 tablespoons olive oil in a large pot over medium-high until glistening.
Add the finely chopped carrots, green and red bell peppers, and diced onion; cook 3–4 minutes until they begin to soften.
Add 1 pound ground turkey and cook, breaking it up, until browned and cooked through.
Stir in the crushed tomatoes (28 oz), tomato sauce (15 oz), tomato paste (6 oz), minced garlic, dried oregano, dried basil or Italian seasoning, sea salt, cracked black pepper, and red pepper if using.
Reduce heat to medium-low and simmer, partially covered, about 30 minutes until the vegetables are tender and the sauce has slightly thickened, stirring occasionally.
Taste and adjust seasoning with more salt or pepper if needed, then serve over pasta.