Garlicky Grilled Squid with Marinated Peppers - Spanish Recipe

Ingredients

• 1/3 cup coarsely chopped blanched hazelnuts or almonds
• 2 Tbsp. plus 1/2 cup extra-virgin olive oil
• Kosher salt
• 4 large red bell peppers
• 2 Tbsp. sherry vinegar or red wine vinegar
• 1 tsp. hot smoked Spanish paprika
• 3 garlic cloves
• 1 1/2 lb. cleaned squid
• bodies and tentacles separated
• 1/2 small red onion
• very thinly sliced
• 1 cup mint leaves
• torn if large
• 1/2 lemon