Grilled chicken nacho salad

Ingredients

• 375 g chicken tenders
• 1 1/2 tbsp olive oil , divided
• 1 tsp chili powder
• 1 tsp ground cumin
• 1/4 tsp salt
• 2/3 cup prepared salsa
• 4 cups shredded romaine lettuce , lightly packed
• 1 small yellow pepper , diced
• 1 pint cherry tomatoes , halved
• 1 cup canned black beans , drained and rinsed
• 1/4 cup diced red onion
• 6 cups tortilla chips , preferably Neal Brothers Organic Deep Blue + Flax Tortillas
• 1 avocado , pitted and sliced (optional)
• lime wedges , (optional)