Creamy Pasta and Peppers

When I saw all the pretty peppers on sale while at the grocery store I immediately remembered this pasta dish and bought them. I decided to make my own sauce this time though because I had a little cream left and a whole new tub of Parmesan cheese in the fridge. I looked at a few different recipes and came up with this sauce that we all LOVED...even Mike, who doesn't care for creamy pasta dishes.

1 T. olive oil
2-3 bell peppers, diced (I used 3/4 each of a red, orange and yellow pepper)
1/2 medium white onion, diced
2 cloves garlic, minced
2 medium chicken breasts, cut in strips or chunks
salt and pepper
1 T. butter
1/2 c. cream
1/2 c. 1% milk
2 T. lemon juice
1 1/2 c. Parmesan cheese
8 oz penne pasta (I used gluten free)

-Start pasta cooking and prepare sauce...
-In a large saucepan saute peppers, onion and garlic in olive oil over medium heat until tender.
-Sprinkle chicken with salt and pepper and add to pepper mixture, cook about 5 minutes.
-Make space in center of pan and melt butter. Add lemon juice and cream and simmer until it begins to thicken and chicken is cooked through.
-Add Parmesan and stir until melted and heated through.