There aren't too many amounts given for the ingredients, you just have to balance it how you want it -- I did use a whole package of bacon instead of just a handful of pieces and more sundried tomatoes and pesto than it said to and it was delicious. Also, the recipe says it's better served cold, but I liked it warm and even reheated a bowl of it for my lunch today.
About 500grams spiral pasta
Cook the pasta and drain (in advance if you have time, it’s better served cold), sprinkle with olive oil.
Cook about a handful of bacon pieces, so they are nice and crispy, add to pasta with any oil in pan.
Cut about a tablespoon of sundried tomato into little pieces, add to pasta with some of the oil from the sundried tomatoes jar.
Stir about 2 tablespoons of pesto into the pasta.
Sprinkle with a small handful of crumbled feta cheese.
Toss everything together, and you’re done!