01 -
Season chicken cubes with salt, black pepper, garlic powder, and paprika. Heat 2 tablespoons olive oil in a large skillet over medium-high heat. Add chicken and cook for 6 to 8 minutes until evenly golden and cooked through. Remove from skillet and set aside.
02 -
Preheat oven to 425°F (220°C). Toss mixed vegetables with a drizzle of olive oil, salt, and pepper. Spread in a single layer on a baking sheet ensuring no overcrowding. Roast for 20 to 25 minutes until golden brown and caramelized.
03 -
Bring a large pot of salted water to a boil. Add spaghetti and cook according to package instructions until al dente. Reserve 1/2 cup pasta water before draining.
04 -
Reduce heat to medium and melt butter in the same skillet. Add minced garlic and cook, stirring constantly, for 30 to 45 seconds until fragrant but not browned. Pour in heavy cream and milk, scraping up browned bits from the pan. Simmer gently for 2 to 3 minutes until slightly thickened.
05 -
Remove skillet from heat. Gradually stir in shredded cheese until fully melted and sauce is smooth. If sauce is too thick, add reserved pasta water a little at a time to reach desired consistency.
06 -
Return cooked chicken to the skillet, add roasted vegetables and drained spaghetti. Toss gently until everything is well coated and heated through.
07 -
Transfer to serving plates and garnish with fresh parsley, cracked black pepper, and red pepper flakes if desired.