Spicy Rattlesnake Pasta with Chicken and Jalapeños

Ingredients

• 1 lb penne pasta
• 1 lb boneless, skinless chicken breast, cut into bite-sized pieces
• 2 tbsp olive oil, divided
• 1 1/2 tsp Cajun seasoning
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1/2 red onion, sliced
• 3 cloves garlic, minced
• 2-3 jalapeño peppers, sliced (remove seeds for less heat)
• 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
• 1/4 cup chopped fresh parsley