Brown Rice Chicken Bake

• 1 vegetable cooking spray
• 350 gr brown rice (cooked)
• 280 gr chicken breast cubed (cooked halves)
• 120 ml mayonnaise
• 40 gr slivered almonds (toasted)
• 10 ml soy sauce
• 1 gr black pepper gro
• 1 gr garlic powder
• 1 gr tarragon (dried)
• 1 package green peas (frozen)