01 - Preheat oven to 425°F. Line a baking sheet with parchment paper. Arrange bell pepper quarters and sliced red onion on the prepared sheet. Drizzle with a small amount of olive oil and season lightly with salt. Roast for 25 to 30 minutes, turning vegetables halfway, until they are tender and lightly charred. Allow to cool slightly, then cut the roasted peppers into bite-sized pieces.
02 - Rinse the farro thoroughly under cold water. In a saucepan, combine farro, water, and salt. Bring to a boil over medium-high heat, then reduce heat and simmer uncovered for 20 to 25 minutes, or until farro is tender but retains a pleasant bite. Drain any remaining liquid.
03 - In a small mixing bowl, whisk together extra-virgin olive oil, fresh lemon juice, Dijon mustard, minced garlic, honey, salt, and black pepper until the dressing is well emulsified.
04 - In a large bowl, combine the cooked farro, roasted bell peppers, roasted red onion, cherry tomatoes, and chopped parsley. Drizzle with the prepared dressing and toss until evenly coated.
05 - Serve the salad warm or at room temperature. Top with crumbled feta cheese and toasted pine nuts if desired.