Healthy Roasted Corn Salad

Ingredients

• 1 sweet corncob
• 1/4 cup tomato, sliced
• 1/2 cup capsicum, sliced
• 1/2 cup onion, sliced
• 2 teaspoons lemon juice
• 1 teaspoon olive oil
• 1/2 teaspoon salt, or to taste
• 1/4 teaspoon chili powder