Grilled Cheese with Sweet Peppers & Lentils

2 servings 

Total Time: 50 minutes

Kosher salt

¾ cup cooked, canned lentils

3 Tbsp. sherry vinegar or red wine vinegar

1 Tbsp. honey

5 Tbsp. extra-virgin olive oil, divided

Freshly ground black pepper

8 oz. grilling cheese (such as bread, Halloumi, or paneer), torn into 2" pieces

1 lb. sweet mini peppers, ribs and seeds removed, halved lengthwise, cut into thirds if large

½ tsp. dried oregano

¼ cup (packed) basil leaves, torn if large

Flaky sea salt