Creamy Chicken & Pasta with Spinach

6 oz. egg noodles
1 T olive oil
1/4 c onion
1/4 c. red bell pepper
1 pkg. 10 oz. frozen chopped spinach
chicken
canned mushrooms
2 c. swiss cheese
8 oz sour cream
3/4 c half & half
2 eggs
1/2 tsp salt