Preheat your oven to 425°F. Toss the chopped red bell pepper, zucchini, cherry tomatoes, and red onion with olive oil, salt, and pepper on a baking sheet.
Roast the vegetables in the oven for about 15-20 minutes until they are tender and slightly caramelized.
While the vegetables roast, season the chicken breast with salt, pepper, and a sprinkle of red chili flakes. In a skillet over medium heat, add a tiny bit of olive oil and sauté the minced garlic until fragrant, then add the chicken.
Cook the chicken for about 5-6 minutes per side or until fully cooked through. Once cooked, slice the chicken into strips.
Prepare the whole wheat pasta according to package directions and drain.
In the same skillet used for the chicken, lower the heat and stir in the light cream cheese, allowing it to melt slightly into a creamy sauce. You can add a splash of pasta water if needed to thin the sauce.
Combine the pasta, roasted vegetables, and sliced chicken in the skillet, tossing everything together with the creamy, spicy sauce.
Adjust seasoning with additional red chili flakes, salt, and pepper if desired, and serve warm.