Preheat oven to 400 degrees. Bring a pot of water to a boil. Cut four pieces of aluminum foil into 14-inch lengths. Boil 1 1/4 lbs fresh green beans , ends trimmed 3 minutes, then carefully drain. Toss green beans with 2 tsp olive oil and season with salt and pepper to taste, divide into 4 servings and layer in center of each piece of foil. Season both sides of salmon with salt and pepper. Layer salmon over green beans and then spread 1 Tbsp pesto over top each fillet. Drizzle 1 tsp lemon juice over each fillet. Toss grape tomatoes, halved, with 1 tsp olive oil and season lightly with salt. Spread over each salmon fillet. Wrap sides of foil and seal. Place side by side on a baking sheet and bake in preheated oven until salmon has cooked through, about 20 (cook time will vary depending on thickness of salmon and desired degree of doneness).