If you replace the pepper after you draw from the bag, the probability of drawing a red pepper each time is 1/2 and the probabilty of drawing a green pepper each time is also 1/2. The same is true for heads or tails. Each flip, the probability of a head is 1/2 and the probability of a tail is 1/2.
Now, if I understand what you are asking, you are saying a sequence of RRR is more likely than HHH. Not true. The probability of getting RRR is (1/2)(1/2)(1/2) = (1/8) and the probability of HHH is (1/2)(1/2)(1/2) = (1/8).
If you were to ask, is the probability of getting two red peppers and a green pepper more likely than RRR, the answer would be yes because there are more ways that two red peppers and a green pepper can occur. You could have RRG, RGR or GRR for a probability of 3/8
However, if you were to specifically say, what is the probability of pulling out 2 red peppers on the 1st and 2nd try followed by a green pepper on the third drawing, that is a SPECIFIC case of 2 reds and a green (RRG). That specific case has a probability of (1/8)