Cheesy Charred Green Beans

Name: Cheesy Charred Green Beans
Ingredients: 1 Tbsp. Diamond Crystal or 1¾ tsp. Morton kosher salt; 1 Tbsp. garlic powder; 1 Tbsp. onion powder; 1 Tbsp. paprika; 2 tsp. ground cumin; ½ tsp. cayenne pepper; ½ tsp. sugar; Juice of 1 lemon; 4 Tbsp. extra-virgin olive oil, divided; 1 lb. mixed summer beans (Chinese long, green, wax, or purple), trimmed; 2 6-oz. slabs paneer; Coarsely chopped unsalted roasted pistachios (for serving)