Yeah - these little ones have their "happy spots" and they love food - a tough choice for them.
You can always sit him back in his safe spot after he eats, or if you see him there again just let him be. They have no issue with begging for food when they want it (hungry or not)
Don't feel bad, their moods and interests change. They will love the plants for a week, and then move on and fall in love with the heater (I guess they look for diversity, just like us
So, it's OK - he'll go back to his plants when he is in the mood
p.s. I know he is an "it" for now; I am just using the term "him" generically.
By the way, Welcome To The Forum!!!!!!!