Preheat the oven to 425 degrees and line a baking dish with parchment paper. Add the peppers, shallot, 2 tablespoons oil, balsamic vinegar and a pinch of salt & pepper to the baking dish. Toss until coated and place in the oven for 15 minutes. Toss and place back in the oven for 15-20 minutes, or until tender with charred edges. Remove from the oven and allow to cool for 30 minutes.
Meanwhile, bring a pot of water to a boil. Add the pasta and cook according to the package instructions. Drain and rinse with cold water.
To make the dressing, add the remaining oil, dijon mustard, apple cider vinegar, garlic, oregano, parsley and a pinch of salt & pepper to a jar or bowl. Whisk until combined. Taste and adjust the seasonings as needed.
To assemble, add everything from the baking dish (including the juices) to a bowl with the pasta, chopped sun-dried tomatoes and spinach. Pour over the dressing and toss until combined. Add a little more balsamic vinegar to taste.
Serve right away or allow to chill in the fridge.
Video
Notes
If you are making this far in advance, I would wait to add the spinach & dressing until right before serving.
This would also be great with a can of chickpeas or vegan feta.
No time to roast veggies? You can use jarred roasted peppers.