Step 1

Preheat a grill or broiler to medium-high. Stir together 2 tablespoons oil and harissa. Brush mixture over peppers and onion; season lightly with salt and pepper. Grill, turning once, until tender and charred in places, about 15 minutes.

Step 2

Whisk together vinegar and remaining 6 tablespoons oil; season with salt and pepper. Toss escarole with 2 tablespoons dressing; season with salt and pepper. Mound onto a serving platter.

Step 3

Toss beans and herbs with 2 more tablespoons dressing and pile alongside. Place grilled vegetables, feta, and pita chips next to greens and drizzle with more dressing. Serve.