BLT Chicken Salad with Warm Bacon Dressing

Ingredients

• 6 slices uncooked bacon, cut into 1/2-inch pieces
• 1/2 medium red onion, sliced very thinly
• 3 T balsamic vinegar
• 10-12 ounces of fresh baby spinach or mixed salad greens
• 3 cups cooked, shredded chicken
• 1 avocado, peeled, pitted, and cubed
• 2 Roma tomatoes, seeded and chopped