Roasted pepper & Potato white bean salad

Ingredients

1 lb baby gold potatoes if they’re big, cut in half or quarters
1 red bell pepper large, cut into slices
2 Tbsp olive oil
divided
1/4 red onion
medium, cut into thin slices
1 × 15 oz can white beans used cannellini, rinsed and drained
¼ cup Parmesan
shaved, omit if vegan, add a pinch of salt instead
¼ cup basil chopped
¼ cup parsley roughly chopped
¼ cup fresh dill
2 Tbsp red wine vinegar
½ tsp dried oregano
salt
pepper