re: Would like some suggestions to improve a pasta recipe..

I, personally, am not huge Alfredo fan. If you are going to stay with Alfredo, I would suggest a little paprika for a richer smokey flavor or crushed red pepper for kick. Add either one while cooking the meat and veggies, before you add the sauce.

I do agree with the facts above: tomatoes give off lots of water, cook your meats until they brown and deglaze the pan with a little broth, white wine, or even beer...actually, any liquid will work and you can scrape the pan while the tomatoes are releasing their liquid. Different liquids will add different flavors. And yes, season as you go, each step. The trick is to add an ingredient, then season and taste before moving on to the next ingredient.

I like tomato sauces with this kind of dish and they make it less fattening. You can start easily by using store bought marinara, but may want to make your own, depending on flavor profiles (sweet, salty, tangy, etc)

Cooking is a cross between science and art and there is so much to learn. I love to watch and read anything from Alton Brown - he has taught me a lot. Ad I love to invite my friends over when I try a new dish. I make the promise that if it is gross, we can always order pizza!

Good luck and have fun!