Spinach Chicken with Balsamic Glaze

I got this recipe from Dinner with the Bickfords. Nice healthy and filling meal! I think the balsamic was a bit much, but I may have over-dressed our plates.

4 boneless, skinless chicken breasts
1/4 tsp. plus 1/8 tsp. salt, divided
1/4 tsp. freshly ground black pepper
1 tbsp. olive oil
1 bell pepper (any color - I used orange), cut into thin strips
1 cup thinly sliced red onion

2 garlic cloves, minced
6 cups loosely packed fresh spinach
1/2 cup balsamic vinegar
1/2 tsp. packed light brown sugar

Directions

1. Sprinkle both sides of the chicken with 1/4 tsp. of the salt and pepper. Heat the oil in a large skillet over medium-high heat until hot. Add the chicken to the oil and cook 4-6 minutes, turning once. Cover and reduce the heat to medium; cook 4 minutes or until chicken is no longer pink in the center. Place on a plate and cover loosely to keep warm. (took much longer than this for me)

2. Increase the heat to medium-high. Add the bell pepper, onion, and garlic to the same skillet and cook for 1-2 minutes until the veggies just begin to soften. Add the spinach and sprinkle the vegetables with the remaining salt. Remove from the heat and toss until the spinach is barely wilted. Place on plates and top with the chicken.

3. Return the same skillet to high heat. Add the vinegar and brown sugar. Bring the vinegar mixture to a boil and boil for 30-60 seconds until slightly thickened. Drizzle the balsamic glaze over and around the chicken and vegetables.