Penne Pasta:

• 1 lb penne pasta

Chicken:

• 1 lb boneless, skinless chicken breast, cut into bite-sized pieces
• 1 1⁄2 tsp Cajun seasoning

Sautéed Vegetables:

• 2 tbsp olive oil, divided
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1⁄2 red onion, sliced
• 3 cloves garlic, minced
• 2–3 jalapeño peppers, sliced (seeds removed for less heat)

Sauce:

• 4 tbsp butter
• 1⁄4 cup all-purpose flour
• 2 cups milk or half-and-half
• 1 cup grated Parmesan cheese
• 1⁄2 tsp salt
• 1⁄4 tsp black pepper

Garnish:

• 1⁄4 cup chopped fresh parsley