Stem and mince parsley. Heat a medium pot over medium-high heat. Add 1 tsp. olive oil, rice, and a pinch of salt to hot pot. Cook until aromatic, 30-90 seconds. Add 1 cup water and bring to a boil. Reduce to a simmer, cover, and cook until tender, 18-20 minutes. When rice is tender, stir in half the parsley (reserve remaining for relish). Remove from burner and set aside. While rice cooks, prepare ingredients.

Trim squash ends and cut into 1/3" planks. Stem, seed, and cut red bell pepper into four pieces. Core tomato and finely chop. Mince garlic. In a mixing bowl, whisk together balsamic glaze, 1 tsp. olive oil, 1 tsp. water, red pepper flakes (to taste), and a pinch of salt. Set aside. Pat shrimp dry, and season both sides with a pinch of salt and pepper. Thread shrimp onto skewers.

Spray grill with cooking spray. Add squash and red bell pepper to hot grill. Cook until crisp tender, 4-6 minutes per side. Transfer vegetables to cutting board and let cool until able to handle. Cut into bite-sized pieces and season with 1/4 tsp. salt.

Coat shrimp skewers with cooking spray and add to hot grill. Grill until lightly charred and shrimp reaches a minimum internal temperature of 145 degrees, 2-3 minutes per side. Brush half the glaze (reserve remaining for garnish) over both sides of shrimp. Remove shrimp to a plate.

In another mixing bowl, combine tomato, garlic (to taste), remaining parsley, 1 tsp. olive oil, 1/4 tsp. salt, and a pinch of pepper.

Place rice on a plate. Arrange vegetables and shrimp skewers next to rice. Drizzle with remaining glaze. Serve relish on the side.