- Breakfast:
  - Banana: 1 medium (105 calories)
  - Apple: 1 small (77 calories)
  - Mango: 1 cup diced (107 calories)
  - Grilled Chicken Breast: 3 oz (142 calories)
  - Watermelon: 1 cup diced (46 calories)
  
Total 'Breakfast' Calories = 477 calories

Adjustments may be needed to align with the 300 calorie target.

Grocery List:
- 1 medium Banana (105 calories)
- 1 small Apple (77 calories)
- 1 cup diced Mango (107 calories)
- 3 oz Grilled Chicken Breast (142 calories)
- 1 cup diced Watermelon (46 calories)