White Chicken Enchiladas

Name: White Chicken Enchiladas
Ingredients: 4 boneless, skinless chicken breast fillets; Kosher salt and freshly ground black pepper; 2 tablespoons olive oil; 2 green bell peppers; 2 red bell peppers; 2 yellow bell peppers; 2 or 3 hot chiles, such as serrranos, jalapenos or the like; 1 large onion, diced; 1 jalapeno, seeded and finely diced; 1 tablespoon vegetable oil; 3 cups low-sodium chicken broth, plus more as needed; 1 1/2 cups heavy cream; 1 teaspoon paprika; 4 tablespoons (1/2 stick) butter; 1/4 cup all-purpose flour; 3 1/2 cups grated Monterey jack cheese; 1 cup sour cream, plus more for serving; 16 small corn or flour tortillas; 1 cup store-bought salsa; 1/4 cup fresh cilantro leaves