Easy Creamy Pasta Sauce with Chicken

I'll be honest, I made this up. It's inspired by a few recipes, adjusted to how I like it.

2 T. olive oil
2 chicken breasts, cut into chunks
8 oz cream cheese, cut into squares
1 can chicken broth
1/2 cup Parmesan cheese
1 14 oz can diced tomatoes, drained (optional)
1/4 cup frozen spinach (optional)

Cook chicken in frying pan with olive oil. Remove from pan. On medium heat, add cream cheese and chicken broth to the pan, cook until cream cheese is melted. Add Parmesan cheese and stir until melted. Add tomatoes and spinach if desired. Return chicken to pan. Add milk if it's too thick or let simmer uncovered if it's too thin. Serve over angel hair or fettuccine.